83C51KB Datasheet, PDF (2/19 Pages) Intel Corporation – HIGH PERFORMANCE KEYBOARD MICROCONTROLLER

83C51KB HIGH PERFORMANCE KEYBOARD MICROCONTROLLER
KSO 0–7
P0.0 – P0.7
KSO 8–15
P2.0 – P2.7
V_CC
V_SS
Port 0
Drivers
Port 0
Drivers
RAM
Port 0
Latch
Port 2
Latch
ROM
ACC
B
Register
TMP2
TMP1
ALU
RST
PSEN#
ALE
EA#
Power On
Reset Ctrl.
Timing
and
Control
V_CC
RC
Osc.
PSW
Port 1
Latch
Port 1
Drivers
Stack
Pointer
SFRs
Timer
Program
Address
Register
Buffer
PC
Incrementer
Program
Counter
DPTR
Port 3
Latch
Port 3
Drivers
KSI 0–7
P1.0 – P1.7
CLK, Data, LED 0–3
P3.0 – P3.7
Figure 1. 83C51KB Block Diagram
A3350-01
2