SMS1242
PIN CONFIGURATION
PIN NAMES
8-Pin SOIC
Pin
Signal
Function
Active low output with weak pullup.
Driven low by: VSENSE below thresh-
old; or VCC below threshold while
MR# is below threshold. Remains
low for 150ms after VSENSE, or VCC
and MR#, is above threshold.
1
2
3
4
8
7
6
5
V
RESET1#
RESET2#
CC
1
RESET1#
MR#
SCL
SDA
V
SENSE
GND
Same as Reset1#, except open
drain connection
2
3
RESET2#
2038 T PCon 2.0
Threshold detector input for the
Resets
VSENSE
GND
4
5
6
7
8
Ground
SDA/GND SMS1243 Data I/O, or ground
SCL/GND SMS1243 Data Clock, or ground
MR#
VCC
Manual input for Resets
Supply voltage
2038 Pin Table 2.0
V
RST
V
RST
V
CC
t
RST
RESET#
MR#
V
IH
V
IL
t
RST
t
RST
t
MR
V
SNS
V
SENSE
2038 T Fig01 2.0
Figure 1. Reset Waveforms
2038 2.0 6/8/00
SUMMIT MICROELECTRONICS, Inc.
3
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
