SMS2902/SMS2904/SMS2916
PB_RST#
VCC = 3.0V or 5.0V
ALE
SMS29xx
WDI#
RESET#
NC
GND
VCC
RESET
SCL
SDA
8051 Type
MCU
RST
SCL (P0.0)
SDA (P0.1)
I
2
C Peripheral
RESET#
SCL
SDA
2028 T fig12 2.0
TYPICAL APPLICATION USING DUAL RESET FUNCTION AND WATCHDOG TIMER
PB_RST#
5.0VDC
SMS29xx
Z80
WDI#
RESET#
NC
GND
VCC
RESET
SCL
SDA
I/O
I/O
DECODER
RST#
2028 T fig13 2.0
TYPICAL APPLICATION CONFIGURATION USING SYSTEM DECODE LOGIC TO RESET WDI
5.0VDC
VCC
1232
PBRST#
TOL
GND
VCC
ST#
RST#
RST
ALE
RST
ALE
SMS29xx
WDI#
RESET#
NC
GND
VCC
RESET
SCL
SDA
24C16
I/O
I/O
SCL
SDA
8051
Family
Part
8051
Family
Part
RST
I/O
I/O
GND
2028 T fig14 2.0
From This
2028 5.1 8/2/00
To This
12