GMS90 Hynix Semiconductor, GMS90 Datasheet - Page 15

• Manufacturer Part Number: GMS90
• Description: 8-BIT SINGLE-CHIP MICROCONTROLLERS
• Manufacturer: Hynix Semiconductor

GMS90 Series
FUNCTIONAL DESCRIPTION
The GMS90 series is fully compatible to the standard 8051 microcontroller family.
It is compatible with the general 8051 family. While maintaining all architectural and operational characteristics
of the general 8051 family.
Figure 1 shows a block diagram of the GMS90 series
Figure 1. Block Diagram of the GMS90 series
Dec. 1998 Ver 3.0
ALE/PROG
RESET
EA/V
XTAL1
XTAL2
PSEN
PP
OSC & TIMING
Serial Channel
Interrupt Unit
Timer 0
Timer 1
Timer 2
CPU
128/256 8
RAM
ROM/EPROM
4K/8K/16K
24K/32K
Port 0
Port 1
Port 2
Port 3
Port 0
8-bit Digit. I/O
Port 1
8-bit Digit. I/O
Port 2
8-bit Digit. I/O
Port 3
8-bit Digit. I/O
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