PCA167X Datasheet, PDF (2/12 Pages) NXP Semiconductors – 32 kHz oscillator, amplitude regulated with excellent frequency stability

Philips Semiconductors
32 kHz watch circuits using a silver-oxide
or a 3 V lithium battery
Product specification
PCA167x series
FEATURES
• 32 kHz oscillator, amplitude regulated with excellent
frequency stability
• High immunity of the oscillator to leakage currents
• Very low current consumption; typically 150 nA
• Stop function for accurate timing
• Chopped motor pulses available
• Power-on reset for fast testing
• Various test modes for testing the mechanical parts of
the watch and the IC.
GENERAL DESCRIPTION
The PCA167x series devices are CMOS integrated circuits
specially suited for battery-operated,
quartz-crystal-controlled wrist-watches, with a bipolar
stepping motor.
ORDERING INFORMATION
TYPE
NUMBER
PCA1672U
PCA1673U
PCA1675U
PCA1676U/10
PCA1677U
NAME
−
−
−
−
−
chip in tray
chip in tray
chip in tray
chip on foil
chip in tray
PACKAGE⁽¹⁾
DESCRIPTION
VERSION
−
−
−
−
−
Note
1. Figure 1 and Chapter “Package outline” show details of standard package, available for large orders only.
Chapter “Chip dimensions and bonding pad locations” shows exact pad locations for other delivery formats.
PINNING
SYMBOL
V_SS
TEST
OSC IN
OSC OUT
V_DD
M1
M2
RESET
PIN
DESCRIPTION
1 ground (0 V)
2 test output
3 oscillator input
4 oscillator output
5 positive supply voltage
6 motor 1 output
7 motor 2 output
8 reset input
VSS ₁
8 RESET
TEST 2
7 M2
PCA167xT
OSC IN 3
6 M1
OSC OUT 4
5 ^VDD
MSA978
Fig.1 Pin configuration, PCA167xT, (PMFP8).
1998 Apr 03
2