PCA1465USLASH7 datasheet(14/24 Pages) PHILIPS

14 / 24 page

1998 Apr 21

Philips Semiconductors

Product speciﬁcation

32 kHz watch circuits with adaptive motor

pulse

PCA146x series

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

Note

1. Connecting the battery with reversed polarity does not destroy the circuit, but in this condition a large current flows,

which will rapidly discharge the battery.

HANDLING

Inputs and outputs are protected against electrostatic discharges in normal handling. However, to be totally safe, it is

advisable to take handling precautions appropriate to handling MOS devices. Advice can be found in

“Data Handbook IC16, General, Handling MOS Devices”.

CHARACTERISTICS

VDD = 1.55 V; VSS =0V; fosc = 32.768 kHz; Tamb =25 °C; crystal: RS =20kΩ; C1 = 2 to 3 fF; CL = 8 to 10 pF;

C0 = 1 to 3 pF; unless otherwise speciﬁed.

Immunity against parasitic impedance = 20 M

Ω between adjacent pins.

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

VDD

supply voltage

VSS = 0 V; note 1

−1.8

all input voltages

VSS

VDD

output short-circuit duration

indeﬁnite

Tamb

operating ambient temperature

−10

+60

°C

Tstg

storage temperature

−30

+100

°C

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply

VDD1

supply voltage

Tamb = −10 to +60 °C

1.2

1.55

2.5

∆V

supply voltage variation

transient within 1.2 V and 2.5 V

−−

0.25

VDD2

supply voltage

programming

5.0

5.1

5.2

∆VDDP

supply voltage pulse

variation

programming

0.55

0.6

0.65

IDD1

supply current

between motor pulses

−

170

260

IDD2

supply current

VDD = 2.1 V

−

190

300

IDD3

supply current

stop mode; pin 8 connected to

VDD

−

180

280

IDD4

supply current

VDD = 2.1 V

−

220

360

IDD5

supply current

Tamb = −10 to +60 °C

−−

600

Motor output

Vsat

saturation voltage

Σ (P + N) R

M =2kΩ; Tamb = −10 to +60 °C

−

150

200

Zo(sc)

output short-circuit

impedance

between motor pulses

Itransistor <1mA

−

200

300

Ω

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