1997 Apr 16

20

Philips Semiconductors

Product specification

8-bit microcontrollers with DTMF generator,

8 kbytes OTP and 128 bytes EEPROM

PCD3755A; PCD3755E;

PCD3755F

16 SUMMARY OF DERIVATIVE REGISTERS

Table 26 Register map

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

“Data Handbook IC14, Section: Handling MOS devices”).

18 LIMITING VALUES

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

ADDR.

(HEX)

REGISTER

7

6

5

4

3210

R/W

00

not used

01

EEPROM Address Register

(ADDR)

0

AD6

AD5

AD4

AD3

AD2

AD1

AD0

R/W

02

not used

03

EEPROM Data Register

(DATR)

D7

D6

D5

D4

D3

D2

D1

D0

R/W

04

EEPROM Control Register

(EPCR)

STT2

ET21

TF2

EWP

MC3

MC2

MC1

0

R/W

05

Timer 2 Reload Register

(RELR)

R7

R6

R5

R4

R3

R2

R1

R0

R/W

06

Timer 2 Register

(T2)

T2.7

T2.6

T2.5

T2.4

T2.3

T2.2

T2.1

T2.0

R

07

Test Register

(TST)

only for test purposes; not to be accessed by the device user

08 to 10

not used

11

High Group Frequency Register

(HGF)

H7

H6

H5

H4

H3

H2

H1

H0

W

12

Low Group Frequency Register

(LGF)

L7

L6

L5

L4

L3

L2

L1

L0

W

13

Melody Control Register

(MDYCON)

0

0

0

0

0

0

0

EMO

R/W

14 to FF

not used

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

supply voltage

−0.8

+7.0

V

all input voltages

−0.5

V

DC input current

−10

+10

mA

DC output current

−10

+10

mA

total power dissipation

−

125

mW

power dissipation per output

−

30

mW

ground supply current

−50

+50

mA

storage temperature

−65

+150

°C

operating junction temperature

−

90

°C