EM78P156E Ver la hoja de datos (PDF) - ELAN Microelectronics

Número de pieza

componentes Descripción

Fabricante

EM78P156E

8-bit CMOS microprocessor, 1K13-bit (OTP-ROM), 2.3V~5.5V

ELAN Microelectronics 

EM78P156E

III. PIN ASSIGNMENTS

EM78P156E

P52 1

P53 2

TCC 3

RESET 4

VSS 5

P60,INT 6

P61 7

P62 8

P63 9

18 P51

17 P50

16 OSCI

15 OSCO

14

VDD

13 P67

12 P66

11 P65

10 P64

DIP

SOP

SOIC

Fig. 1 Pin assignments

IV. FUNCTIONAL BLOCK DIAGRAM

OSCI OSCO /RESET

Oscillator/Timing

Control

WDT Timer

Prescaler

TCC

/INT

Internal C

External R

oscillator

WDT

Time-out

R1(TCC)

Sleep

& Wake

Control

IOCA

RAM

R4

Interrupt

Controller

ROM

Instruction

register

Instruction

Decoder

DATA & CONTROL BUS

R2

Stack

ALU

R3

ACC

IOC5

R5

IOC6

R6

V. PIN DESCRIPTION

Table 1 Pin description-EM78P156E

Symbol

I/O

OSCI

I

OSCO

I/O

TCC

I

PPPP

5555

0123

PPPPPPPP

66666666

01234567

Fig. 2 Functional block diagram

Function

* XTAL type : Crystal input terminal or external clock input pin.

* ERC type: RC oscillator input pin.

* IRC type: 50K ohm pulled high for 4MHz.

* XTAL type: Output terminal for crystal oscillator or external clock input pin.

* RC type: Instruction clock ouput.

* External clock signal input.

* Real time clock/counter with Schmitt trigger input pin, must be tied to VDD

or VSS if not in use.

* This specification is subject to be changed without notice. 8.11.1999

B3-2

Share Link: