1999 Feb 02

16

Philips Semiconductors

Product specification

8-bit microcontroller with 4.5 kbytes OTP

memory and 32 kHz real-time clock

PCD3745A

Fig.6 Simplified interrupt logic schematic (the R input overrules the S input for all flags).

T2F

handbook, full pagewidth

MBH912

DIGITAL

FILTER / LATCH

EI

ENABLE

SQ

R

Q

CLEAR EIF

RESET

CLEAR

SQ

R

EIF

TI

ENABLE

SQ

R

Q

SQ

R

TIF

IIP

SQ

R

Q

INTERRUPT

VECTOR

LOGIC

RETR

RESET

CLEAR TIF

DIS I

CE / T0

RTC1

C1F

C2F

EN I

DIS I

RESET

TIMER

OVERFLOW

EN

TCNT I

DIS

TCNT I

RESET