PCD3351AP datasheet(23/36 Pages) PHILIPS

23 / 36 page

1999 Oct 28

Philips Semiconductors

Product speciﬁcation

8-bit microcontrollers with DTMF generator

and 128 bytes EEPROM

PCA3351C; 52C; 53C;

PCD3351A; 52A; 53A

Notes

1. TONE output, EEPROM erase and write require VDD ≥ 2.5 V.

2. VIL =VSS; VIH =VDD; open-drain outputs connected to VSS; all other outputs open; value HGF = LGF = 0, unless

otherwise specified.

a) Maximum values: external clock at XTAL1 and XTAL2 open-circuit.

b) Typical values: Tamb =25 °C; crystal connected between XTAL1 and XTAL2.

3. VIL =VSS; VIH =VDD; RESET, T1 and CE/T0 at VSS; crystal connected between XTAL1 and XTAL2; pins T1 and

CE/T0 at VSS.

4. Values are specified for DTMF frequencies only (CEPT).

5. Related to the Low Group Frequency (LGF) component (CEPT).

6. After final testing the value of each EEPROM bit is a logic 1, but this cannot be guaranteed after board assembly.

7. Verified on sampling basis.

8. Each device is tested on the condition: VDD(min) <VPOR; to ensure a correct start-up, even for slow rising supply

voltages.

EEPROM (notes 1 and 6)

CYt/w

endurance (erase/write

cycles)

note 7

105

−−

tret

data retention time

−−

years

Power-on-reset (see Fig.16)

VPOR

Power-on-reset level

PCD335xA

conﬁguration as PCD3755A

0.8

1.3

1.8

PCD335xA

conﬁguration as PCD3755E

1.5

2.0

2.5

PCA335xC

conﬁguration as PCD3755E

1.7(8)

2.0

2.3

Oscillator (see Fig.17)

transconductance

VDD = 5 V

0.2

0.4

1.0

feedback resistor

0.3

1.0

3.0

Ω

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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