Intel 8XC196K Series User Manual page 424

V
CC
A B C
RXD
V
CC
1.8kΩ
2N2907
TXD
1.8kΩ
Figure 16-14. Serial Port Programming Mode Circuit
PROGRAMMING THE NONVOLATILE MEMORY
30 pF
XTAL1
V
CC
V
REF
P0.7/PMODE.3
P0.6/PMODE.2
P0.5/PMODE.1
P0.4/PMODE.0
ANGND
READY/P5.6
V
PP
BUSWIDTH/5.7
EA# P2.1/RXD
V
PP
0.01 µF
87C196 Device
2N2222A
1.8kΩ
1.8kΩ
1N914
30 pF
XTAL2
RESET#
10 µF
NMI
V
CC
P2.0/TXD
1N914
RXD
TXD
1.8kΩ
10µF
5
9
4
8
3
7
2
6
1
A0298-04
16-33