PCD3745A datasheet(19/32 Pages) PHILIPS

19 / 32 page

1999 Feb 02

Philips Semiconductors

Product speciﬁcation

8-bit microcontroller with 4.5 kbytes OTP

memory and 32 kHz real-time clock

PCD3745A

16 LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134); see notes 1 and 2.

Notes

1. Stresses above those listed under Limiting Values may cause permanent damage to the device.

2. Parameters are valid over the operating temperature range unless otherwise specified. All voltages are with respect

to VSS unless otherwise stated.

17 HANDLING

Inputs and outputs are protected against electrostatic discharge in normal handling. However, it is good practice to take

normal precautions appropriate to handling MOS devices (see

“Handling MOS devices”).

18 DC CHARACTERISTICS

VDD = 1.8 to 6 V; VSS =0V; Tamb = −25 to +70 °C; fxtal = 3.58 MHz; fRTC = 32768 Hz; all voltages with respect to VSS

unless otherwise speciﬁed.

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

VDD

supply voltage

−0.8

+7.0

all input voltages

−0.5

VDD + 0.5

II, IO

DC input or output current

−10

+10

Ptot

total power dissipation

−

125

power dissipation per output

−

ISS

ground supply current

−50

+50

Tstg

storage temperature

−65

+150

°C

operating junction temperature

−

°C

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply (see Figs 8, 9, 10, 11, 12 and 13)

VDD

supply voltage

operating

1.8

−

RAM data retention in Stop

mode

1.0

−

IDD

operating supply current

VDD = 3 V; note 1

−

0.35

0.7

IDD(ID)

supply current Idle mode

VDD = 3 V; note 1

−

0.25

0.5

IDD(stp)

supply current Stop mode

Tamb =25 °C; counters and RTC not

running; notes 1 and 2

−

1.0

5.0

µA

Tamb = −25 to +70 °C; counters and

RTC not running; notes 1 and 2

−−

µA

Tamb =25 °C; counters and RTC

running at 33 kHz; notes 1 and 2

−

3.0

6.0

µA

Inputs

VIL

LOW-level input voltage

−

0.3VDD V

VIH

HIGH-level input voltage

0.7VDD −

VDD

ILI

input leakage current

VSS ≤ VI ≤ VDD

−1

−

µA

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