PCA2125TS/1-T NXP Semiconductors, PCA2125TS/1-T Datasheet - Page 3

• Manufacturer Part Number: PCA2125TS/1-T
• Description: Real Time Clock AUTO RL TME CLCK/CAL
• Manufacturer: NXP Semiconductors

Specifications of PCA2125TS/1-T

• Bus Type: Serial (3-Wire, SPI)
• Package Type: TSSOP
• Operating Supply Voltage (max): 5.5V
• Operating Temperature (min): -40C
• Mounting: Surface Mount
• Date Format: DW:DM:M:Y
• Time Format: HH:MM:SS
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-14
• Lead Free Status / RoHS Status: Compliant
• Other names: PCA2125TS/1,118

NXP Semiconductors
7. Pinning information
8. Functional description
PCA2125_1
Product data sheet
7.1 Pinning
7.2 Pin description
Table 3.
The PCA2125 contains sixteen 8-bit registers with an auto-incrementing address register,
an on-chip 32.768 kHz oscillator with one integrated capacitor, a frequency divider which
provides the source clock for the Real-Time Clock (RTC), a programmable clock output,
and a 6 MHz SPI-bus.
All sixteen registers are designed as addressable 8-bit parallel registers although not all
bits are implemented:
Symbol
OSCI
OSCO
n.c.
INT
CE
V
SDO
SDI
SCL
n.c.
CLKOUT
V
Fig 2.
SS
DD
Pin configuration for TSSOP14
Pin description
Pin
1
2
3, 4
5
6
7
8
9
10
11, 12
13
14
Description
oscillator input
oscillator output
not connected; do not connect and do not use as feed through; connect
to V
interrupt output (open-drain; active LOW)
chip enable input (active HIGH) with 200 k pull-down resistor
ground
serial data output, push-pull
serial data input; might float when CE inactive
serial clock input; might float when CE inactive
not connected; do not connect and do not use as feed through; connect
to V
clock output (open-drain)
supply voltage
Rev. 01 — 28 July 2008
OSCO
DD
DD
OSCI
V
n.c.
n.c.
INT
CE
SS
if floating pins are not allowed
if floating pins are not allowed
1
2
3
4
5
6
7
PCA2125
001aaf892
14
13
12
11
10
9
8
V
CLKOUT
n.c.
n.c.
SCL
SDI
SDO
DD
SPI Real-time clock/calendar
PCA2125
© NXP B.V. 2008. All rights reserved.
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