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337 Other Function uPs,uCs & Peripheral ICs 24

Other Function uPs,uCs & Peripheral ICs
Part# Info Specs
Part RoHS Manufacturer Description ADC Channels Maximum Access Time Additional Features Address Bus Width Bit Size Boundary Scan Bus Compatibility CPU Family Maximum Clock Frequency DAC Channels DMA Channels External Data Bus Width Format Information Access Method Integrated Cache Interrupt Capability JESD-30 Code JESD-609 Code Length Low Power Mode Moisture Sensitivity Level (MSL) No. of Bits No. of DMA Channels No. of External Interrupts No. of I/O Lines No. of Ports No. of Serial I/Os No. of Terminals No. of Timers On Chip Data RAM Width On Chip Program ROM Width Maximum Operating Temperature Minimum Operating Temperature PWM Channels Package Body Material Package Code Package Equivalence Code Package Shape Package Style (Meter) Peak Reflow Temperature (C) Power Supplies (V) Qualification RAM Bytes RAM Words ROM Words ROM Programmability ROM Bits Size Screening Level Maximum Seated Height Speed Maximum Standby Current Sub-Category Maximum Supply Current Maximum Supply Voltage Minimum Supply Voltage Nominal Supply Voltage Surface Mount Technology Temperature Grade Terminal Finish Terminal Form Terminal Pitch Terminal Position Minimum Time Maximum Time At Peak Reflow Temperature (s) Total Dose (V) Ultraviolet Erasable Volatile Width Peripheral IC Type Data EEPROM Size Connectivity Peripherals Analog To Digital Convertors
TMS320DM335CZCE216 by Texas Instruments

TMS320DM335CZCE216

Texas Instruments

TMS320DM335CZCE216 by Texas Instruments is a 32-bit microprocessor with 8192 RAM words. Operating at 1.3-3.3V, it has a peak reflow temp of 260°C and operates b/w 0-85°C. Ideal for applications requiring a low-profile, fine-pitch grid array package style.

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM335DZCE135 by Texas Instruments

TMS320DM335DZCE135

Texas Instruments

TMS320DM335DZCE135 by Texas Instruments is a 32-bit microprocessor with 8192 RAM words. It operates at temperatures from 0 to 85°C and has a max supply voltage of 1.365V. This MICROPROCESSOR CIRCUIT is ideal for applications requiring low power consumption and high processing capabilities.

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM335DZCE216 by Texas Instruments

TMS320DM335DZCE216

Texas Instruments

MICROPROCESSOR CIRCUIT; Temperature Grade: OTHER; Terminal Form: BALL; No. of Terminals: 337; Package Code: LFBGA; Package Shape: SQUARE;

32

I2C; SPI; UART; USB

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM355ZCE270 by Texas Instruments

TMS320DM355ZCE270

Texas Instruments

TMS320DM355ZCE270 by Texas Instruments is a 32-bit microprocessor with 337 terminals, operating at temperatures from 0 to 85°C. It features a max supply voltage of 1.365V and RAM words of 32768, suitable for applications requiring high processing power in compact spaces like embedded systems and IoT devices.

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

32768

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

DM355SDZCE135 by Texas Instruments

DM355SDZCE135

Texas Instruments

The Texas Instruments DM355SDZCE135 is a 32-bit microprocessor with 8192 RAM words. It operates at temperatures from 0 to 85°C and has a max supply voltage of 1.365V. Ideal for applications requiring a low-profile, fine-pitch package style in CMOS technology.

IT ALSO OPERATES AT 1.8V AND 3.3V SUPPLY FOR I/O

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

DM355SDZCE216 by Texas Instruments

DM355SDZCE216

Texas Instruments

MICROPROCESSOR CIRCUIT; Temperature Grade: OTHER; Terminal Form: BALL; No. of Terminals: 337; Package Code: LFBGA; Package Shape: SQUARE;

IT ALSO OPERATES AT 1.8V AND 3.3V SUPPLY FOR I/O

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

DM355SDZCE270 by Texas Instruments

DM355SDZCE270

Texas Instruments

The Texas Instruments DM355SDZCE270 is a 32-bit microprocessor with 8192 RAM words. It operates at temperatures from 0 to 85°C and has a max supply voltage of 1.365V. This MICROPROCESSOR CIRCUIT is ideal for applications requiring low profile, fine pitch package styles in surface mount configurations.

IT ALSO OPERATES AT 1.8V AND 3.3V SUPPLY FOR I/O

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

DM355SDZCEA216 by Texas Instruments

DM355SDZCEA216

Texas Instruments

DM355SDZCEA216 by Texas Instruments is a 32-bit microprocessor circuit with a max supply voltage of 1.365V. It is used in industrial applications and supports I2C, SPI, UART, and USB bus compatibility.

IT ALSO OPERATES AT 1.8V AND 3.3V SUPPLY FOR I/O

32

I2C; SPI; UART; USB

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

100 Cel

-40 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

INDUSTRIAL

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM355CZCE216 by Texas Instruments

TMS320DM355CZCE216

Texas Instruments

MICROPROCESSOR CIRCUIT; Temperature Grade: OTHER; Terminal Form: BALL; No. of Terminals: 337; Package Code: LFBGA; Package Shape: SQUARE;

IT ALSO OPERATES AT 1.8V AND 3.3V SUPPLY FOR I/O

32

I2C; SPI; UART; USB

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM355CZCEA21 by Texas Instruments

TMS320DM355CZCEA21

Texas Instruments

TMS320DM355CZCEA21 by Texas Instruments is a 32-bit microprocessor with 337 terminals, operating at -40 to 100 °C. It features a 1.3 V nominal voltage, I2C, SPI, UART, USB compatibility and is ideal for industrial applications requiring a MICROPROCESSOR CIRCUIT in a SQUARE package with PLASTIC/EPOXY body material.

IT ALSO OPERATES AT 1.8V AND 3.3V SUPPLY FOR I/O

32

I2C; SPI; UART; USB

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

100 Cel

-40 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

INDUSTRIAL

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM355DZCE216 by Texas Instruments

TMS320DM355DZCE216

Texas Instruments

TMS320DM355DZCE216 by Texas Instruments is a 32-bit microprocessor with 8192 RAM words. It operates at 1.3V nominal voltage and supports I2C, SPI, UART, and USB buses. Ideal for applications requiring low profile, fine pitch package style in the temperature range of 0-85°C.

IT ALSO OPERATES AT 1.8V AND 3.3V SUPPLY FOR I/O

32

I2C; SPI; UART; USB

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM355DZCE270 by Texas Instruments

TMS320DM355DZCE270

Texas Instruments

TMS320DM355DZCE270 by Texas Instruments is a 32-bit microprocessor with 8192 RAM words. It operates at temperatures from 0 to 85 °C and supports I2C, SPI, UART, and USB buses. This MICROPROCESSOR CIRCUIT has a package style of GRID ARRAY and is suitable for various applications requiring low profile and fine pitch components.

IT ALSO OPERATES AT 1.8V AND 3.3V SUPPLY FOR I/O

32

I2C; SPI; UART; USB

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM355DZCEA21 by Texas Instruments

TMS320DM355DZCEA21

Texas Instruments

TMS320DM355DZCEA21 by Texas Instruments is a 32-bit microprocessor with 8192 RAM words. It operates at temperatures from -40 to 100°C and supports I2C, SPI, UART, and USB buses. This industrial-grade IC has a package style of grid array with low profile and fine pitch for various applications.

IT ALSO OPERATES AT 1.8V AND 3.3V SUPPLY FOR I/O

32

I2C; SPI; UART; USB

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

100 Cel

-40 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

INDUSTRIAL

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMX320DM355ZCE216 by Texas Instruments

TMX320DM355ZCE216

Texas Instruments

MICROPROCESSOR CIRCUIT; Temperature Grade: OTHER; Terminal Form: BALL; No. of Terminals: 337; Package Code: LFBGA; Package Shape: SQUARE;

32

FIXED POINT

S-PBGA-B337

13 mm

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

NOT SPECIFIED

1.3,1.8,3.3

Not Qualified

32768

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

BALL

.65 mm

BOTTOM

NOT SPECIFIED

13 mm

MICROPROCESSOR CIRCUIT

TMX320DM355ZCE270 by Texas Instruments

TMX320DM355ZCE270

Texas Instruments

Texas Instruments TMX320DM355ZCE270 is a 32-bit microprocessor with 337 terminals, operating at temperatures from 0 to 85°C. It features a max supply voltage of 1.365V and RAM words of 32768, suitable for MICROPROCESSOR CIRCUIT applications in various industries.

32

FIXED POINT

S-PBGA-B337

13 mm

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

NOT SPECIFIED

1.3,1.8,3.3

Not Qualified

32768

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

BALL

.65 mm

BOTTOM

NOT SPECIFIED

13 mm

MICROPROCESSOR CIRCUIT

SM32DM355GCEM216EP by Texas Instruments

SM32DM355GCEM216EP

Texas Instruments

Texas Instruments SM32DM355GCEM216EP is a 32-bit microprocessor with 8192 RAM words. It operates b/w -55 to 125 °C and supports I2C, SPI, UART, USB buses. Ideal for military-grade applications due to its CMOS technology and low profile grid array package style.

32

I2C; SPI; UART; USB

32

FIXED POINT

S-PBGA-B337

e0

13 mm

3

337

125 Cel

-55 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

8192

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

MILITARY

TIN LEAD

BALL

.65 mm

BOTTOM

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM335ZCE135 by Texas Instruments

TMS320DM335ZCE135

Texas Instruments

MICROPROCESSOR CIRCUIT; Temperature Grade: OTHER; Terminal Form: BALL; No. of Terminals: 337; Package Code: LFBGA; Package Shape: SQUARE;

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

32768

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM335ZCE270 by Texas Instruments

TMS320DM335ZCE270

Texas Instruments

TMS320DM335ZCE270 by Texas Instruments is a 32-bit microprocessor with 337 terminals, operating at temperatures from 0 to 85°C. It supports I2C, SPI, UART, and USB buses and has a supply voltage range of 1.235V to 1.365V. Ideal for applications requiring high-performance computing in compact spaces.

I2C; SPI; UART; USB

32

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

Not Qualified

1.3 mm

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

DM355SZCE135 by Texas Instruments

DM355SZCE135

Texas Instruments

The Texas Instruments DM355SZCE135 is a 32-bit microprocessor with 337 terminals and 32768 RAM words. Operating b/w 0-85°C, it has a supply voltage range of 1.235-3.3V and peak reflow temperature of 260°C. Ideal for applications requiring a low-profile, fine-pitch grid array package in CMOS technology.

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

32768

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

DM355SZCE270 by Texas Instruments

DM355SZCE270

Texas Instruments

Texas Instruments DM355SZCE270 is a 32-bit microprocessor with 337 terminals. Operating b/w 0-85°C, it has a max supply voltage of 1.365V and RAM words of 32768. Ideal for applications requiring a low-profile, fine-pitch package style in CMOS technology.

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

85 Cel

0 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

32768

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

OTHER

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

DM355SZCEA135 by Texas Instruments

DM355SZCEA135

Texas Instruments

Texas Instruments DM355SZCEA135 is a 32-bit microprocessor with 337 terminals, operating at temperatures from -40 to 100°C. It has a max supply voltage of 1.365V and RAM words of 32768, suitable for industrial applications requiring high processing power in a compact form factor.

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

100 Cel

-40 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

32768

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

INDUSTRIAL

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

DM355SZCEA216 by Texas Instruments

DM355SZCEA216

Texas Instruments

The Texas Instruments DM355SZCEA216 is a 32-bit microprocessor with 337 terminals, operating at temperatures from -40 to 100°C. It has a max supply voltage of 1.365V and RAM capacity of 32768 words. Ideal for industrial applications requiring high processing power in a compact form factor.

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

100 Cel

-40 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

32768

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

INDUSTRIAL

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM355ZCEA216 by Texas Instruments

TMS320DM355ZCEA216

Texas Instruments

TMS320DM355ZCEA216 by Texas Instruments is a 32-bit microprocessor with 337 terminals and 32768 RAM words. Operating temperature ranges from -40 to 100°C, making it suitable for industrial applications. With a max supply voltage of 1.365V, this CMOS technology-based device is ideal for various embedded systems requiring high processing power in a compact form factor.

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

100 Cel

-40 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

32768

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

INDUSTRIAL

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT

TMS320DM355ZCEA135 by Texas Instruments

TMS320DM355ZCEA135

Texas Instruments

TMS320DM355ZCEA135 by Texas Instruments is a 32-bit microprocessor with 337 terminals, operating at -40 to 100°C. It features a max supply voltage of 1.365V and RAM of 32768 words. Ideal for industrial applications requiring a low-profile, fine-pitch package style.

32

FIXED POINT

S-PBGA-B337

e1

13 mm

3

337

100 Cel

-40 Cel

PLASTIC/EPOXY

LFBGA

BGA337,19X19,25

SQUARE

GRID ARRAY, LOW PROFILE, FINE PITCH

260

1.3,1.8,3.3

Not Qualified

32768

1.3 mm

Digital Signal Processors

1.365 V

1.235 V

1.3 V

YES

CMOS

INDUSTRIAL

TIN SILVER COPPER

BALL

.65 mm

BOTTOM

30

13 mm

MICROPROCESSOR CIRCUIT