ADP315PC87570 National Semiconductor, ADP315PC87570 Datasheet - Page 25

• Manufacturer Part Number: ADP315PC87570
• Description: Keyboard and Power Management Controller
• Manufacturer: National Semiconductor

TB
TRIS
V
V
V
WR1,0
BAT
CC
REF
1. This is a quasi-bidirectional output. It has drive low capability. It is pulsing high for a short period; steady state:
Signal
pull high using a weak pull-up. See also Section 12.2.3 on page 90
103, 102
160-pin
98, 147
21, 61,
69
92
26
74
Pin Number
108, 161
113, 112
176-pin
23, 67,
102
75
28
80
Signal/Pin Connection and Description
TTL
STRAP
IN
N/A
ANIN
-
ULR
Input
Buffer Type
25
-
-
-
N/A
ANOUT
CM
Output
Timer pin B
TRI-STATE strap option. When high, during
power-up reset, causes the PC87570 to float all
its output and I/O signals.
Battery supply. This is the 2.4 - 5.5V battery
voltage for the RTC circuitry.
Digital 5V or 3.3V power supply
Reference voltage for the on-chip A/D circuits.
With the internal V
connected between V
internal V
ence voltage should be connected to this input.
Write control for bytes 0 and 1
REF
is disabled, an External Refer-
Function
REF
REF
enabled a capacitor is
and GND. When the
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