EM78P451SWM datasheet(35/54 Pages) EMC

Part #	EM78P451SWM

Description	8-Bit Microcontroller with OTP ROM

PDF	54 Pages

Scroll/Zoom	100%

Manufacturer	EMC [ELAN Microelectronics Corp]

Direct Link	http://www.emc.com.tw

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35 / 54 page

EM78P451S

8-Bit Microcontroller with OTP ROM

Product Specification (V1.0) 06.01.2004

• 31

(This specification is subject to change without further notice)

TMR1: Timer1 Register

TMR17~TMR10 is bit set of Timer1 register and it increases until the value

matches PWP and then it reset to 0.

PWP: Pulse Width Preset Register

PWP7~PWP0 is bit set of pulse width preset for the desired width of baud clock in

advance.

T1CON: Timer1 Control Register

Bit 2 (TM1E): Timer1 enable bit

Bit 1 (TM1P1) and Bit 0 (TM1P): Timer1 prescaler for FSCO

TM1P1

TM1P0

Prescaler Rate

1:1

1:4

1:8

1:16

4.7 RESET and Wake-up

A RESET is initiated by

(1) Power on reset, or

(2) /RESET pin input “low”, or

(3) WDT timeout. (if enabled)

WDTE

Setup

Time

WDT

WDT timeout

Power-

on Reset

Voltage

Detector

Oscillator

VDD

CLK

CLR

CLK

Reset

Fig. 16 Block Diagram of Reset

EM78P451SWM Datasheet(PDF) 35 Page - ELAN Microelectronics Corp

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