GMS90C320

OCT. 2000 Ver 1.2

1

GMS90C320/L320

CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

ROM-less Version for 90C52

Features

• Fully compatible to standard MCS-51 microcontroller

• Versions for 40/50 MHz operating frequency

• Low voltage version for 24MHz operating frequency

• 256 bytes of on-chip data RAM

• 64K external program memory space

• 64K external data memory space

• Four 8-bit ports

• Three 16-bit Timers/Counters (Timer 2 with up/down counter feature)

•USART

• Six interrupt sources, two priority levels

• Power saving Idle and power down mode

• 2.7Volt low voltage version available

• P-DIP-40, P-LCC-44, P-MQFP-44 package

The GMS90C320 described in this document is compatible with the standard 80C32 can be used for all present standard

80C32 applications.

Operating Voltage (V)

Device Name

ROM

RAM

Operating

Frequency (MHz)

4.25~5.5

GMS90C320

ROM-less

256

×××× 8bit

40/50

2.7~5.5

GMS90L320

ROM-less

256

×××× 8bit

24

RAM

256 x 8

T0

T1

ROM-less

CPU

8-BIT

USART

PORT0

PORT3

PORT1

PORT2

T2

I/O

I/O

I/O

I/O