TIMER 0, 1
I
2
C
UART
ACCELERATED
80C51 CPU
WATCHDOG TIMER
AND OSCILLATOR
PORT 0
CONFIGURABLE I/OS
128 BYTE
DATA RAM
4K BYTE
CODE EPROM
INTERNAL BUS
ANALOG
COMPARATORS
PORT 1
CONFIGURABLE I/OS
KEYPAD
INTERRUPT
PORT 2
CONFIGURABLE I/OS
POWER MONITOR
(POWER-ON RESET,
BROWNOUT RESET)
CONFIGURABLE
OSCILLATOR
CRYSTAL OR
RESONATOR
ON-CHIP
RC
OSCILLATOR
417-RCC1055-590
P87LPC764BN
R OUT
R IN
T OUT
V-
C -
C +
V+
C -
V-
C +
2
1
2
T IN
T IN
R OUT
R IN
T OUT
GND
V
C +
GND
C -
1
2
2
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1
1
1
CC
1
2
2
2
2
SP233ACP
20-PIN PLASTIC DIP
Case Outline (2/2)
417-HV3288K-225A
W78E52B
417-MP-430
SP232ACP
RCC-1055
13
