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20 pF
+5.0V
1.0µF
+12.50V
V
CC
V
CC
270kΩ
74HC14
ON = Programming
V
CC
270kΩ
74HC14
ON = Error
Figure 16-12. Auto Programming Circuit for 8XC196K x Devices
The 8XC196CA and Jx devices support only a 16-bit, zero-wait-state bus
configuration for auto programming. For these devices, omit the BUSWIDTH,
P2.5, and P2.3 connections (the pins are not implemented). For the 8XC196Jx,
also omit the NMI connection (the pin is not implemented).
PROGRAMMING THE NONVOLATILE MEMORY
20 pF
XTAL1
XTAL2
RESET#
V
V
CC
CC
READY/P5.6
V
NMI
SS
BUSWIDTH/P5.7
EA#
V
PP
V
REF
RD#/P5.3
P0.7/
PMODE.3
P0.6/
P1.2
PMODE.2
P1.1
P0.5/
PMODE.1
AD13:8
P0.4/
PMODE.0
ANGND
ALE/P5.0
P2.7/PACT#
AD7:0
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0/PVER
87C196 Device
NOTE
V
CC
100 kΩ
74HC14
10µF
OE#
A15
A14
A13:8
LE OE#
27(C)512
A7:0
74LS373
Reset
1 kΩ
CE#
A0296-03
16-27
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