GMS90C320 Datasheet, PDF (12/46 Pages) Hynix Semiconductor – HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS90C320
Function Description
The GMS90 series is fully compatible to the standard 8051 microcontroller family.
It is compatible with the standard 80C32. While maintaining all architectural and operational characteristics of the standard
80C32, the GMS90C320 incorporates some enhancements in the Timer 2 unit.
Figure 1 shows a block diagram of the GMS90C320
XTAL1
XTAL2
RESET
ALE
PSEN
EA
OSC & Timing
CPU
Timer 0
Timer 1
Timer 2
Interrupt Unit
Serial Channel
RAM
256 x 8
Port 0
Port 1
Port 2
Port 3
Port 0
8-bit Digital I/O
Port 1
8-bit Digital I/O
Port 2
8-bit Digital I/O
Port 3
8-bit Digital I/O
Figure 1 Block Diagram of the GMS90C320
8
OCT. 2000 Ver 1.2