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
RAM
256 x 8
XTAL1
OSC & Timing
XTAL2
CPU
Timer 0
RESET
Port 0
8-bit Digital I/O
Port 0
Port 1
Port 2
Port 3
ALE
Timer 1
Port 1
8-bit Digital I/O
PSEN
EA
Timer 2
Port 2
8-bit Digital I/O
Interrupt Unit
Serial Channel
Port 3
8-bit Digital I/O
Figure 1 Block Diagram of the GMS90C320
8
OCT. 2000 Ver 1.2