s-35190a Seiko Instruments Inc., s-35190a Datasheet - Page 2

• Manufacturer Part Number: s-35190a
• Description: 3-wire Real-time Clock
• Manufacturer: Seiko Instruments Inc.

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