3-WIRE REAL-TIME CLOCK
S-35190A
Rev.2.4_00
Pin Configuration
8-Pin SOP (JEDEC)
Top view
INT
XOUT
XIN
VDD
SIO
SCK
CS
8
7
6
5
1
2
3
4
VSS
(1.84 × 1.97 × 0.6 max)
Figure 1 Pin Configuration (S-35190A-J8T1G)
8-Pin TSSOP
Top view
8
7
6
5
1
2
3
4
VDD
SIO
SCK
CS
INT
XOUT
XIN
VSS
Figure 2 Pin Configuration (S-35190A-T8T1G)
SNT-8A
Top view
8
7
6
5
VDD
SIO
SCK
CS
INT
XOUT
XIN
1
2
3
4
VSS
Figure 3 Pin Configuration (S-35190A-I8T1G)
List of Pin
Table 1
Pin No.
1
Symbol
Description
Output pin for
Interrupt signal
Connection pin for
crystal oscillator
I/O
Configuration
Nch open-drain output
Output
INT
(no protective diode at VDD)
2
3
4
XOUT
XIN
VSS
−
−
−
GND pin
−
Input pin for chip
CMOS input
5
CS
Input
select
(built-in pull-down resistor. no protective diode at VDD)
CMOS input
Input pin for serial
clock
6
Input
SCK
(no protective diode at VDD)
Nch open-drain output
I/O pin for serial
data
7
8
SIO
Bi-directional (no protective diode at VDD)
CMOS input
Pin for positive
power supply
VDD
−
−
2
Seiko Instruments Inc.
SII [ SEIKO INSTRUMENTS INC ]
