IC89C54 Datasheet, PDF (4/24 Pages) Integrated Circuit Solution Inc – CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 16/32/64-Kbytes of FLASH

IC89C54/58/64
VCC
VSS
16K/32K/64K
MAIN CODE
FLASH
SFR
BLOCK
P2[7:0]
P0[7:0]
80C31 CPU CORE
256
BYTE
RAM
CLOCK
&
TIMING
ALE
PSEN
RST
EA
XTAL2
XTAL1
PORT 1
TIMER 2
UART
INT0
INT1
TIMER 0 TIMER 1
PORT 3
P1[7:0]
P3[7:0]
Figure 4. IC89C54/58/64 Block Diagram
4
Integrated Circuit Solution Inc.
MC009-0B