W78E052C - 8-Bit Microcontroller

부품번호

W78E052C 기능

기능

8-Bit Microcontroller

제조업체

Winbond Electronics

로고

W78E052C 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.

전체 23 페이지수

미리보기를 사용할 수 없습니다

www.DataSheet4U.com

W78E52C Data Sheet

Table of Contents-

8-BIT MICROCONTROLLER

1. GENERAL DESCRIPTION ......................................................................................................... 2

2. FEATURES ................................................................................................................................. 2

3. PIN CONFIGURATIONS ............................................................................................................ 3

4. PIN DESCRIPTION..................................................................................................................... 4

5. BLOCK DIAGRAM ...................................................................................................................... 5

6. FUNCTIONAL DESCRIPTION ................................................................................................... 6

6.1 Timers 0, 1, and 2........................................................................................................... 6

6.2 New Defined Peripheral.................................................................................................. 6

6.3 Watchdog Timer ............................................................................................................. 8

6.4 Clock ............................................................................................................................. 10

6.5 Power Management...................................................................................................... 10

6.6 Reset............................................................................................................................. 10

7. SECURITY BITS ....................................................................................................................... 11

7.1 Lock Bit ......................................................................................................................... 11

7.2 MOVC Inhibit................................................................................................................. 11

DataSheet4U.com

7.3 Encryption ..................................................................................................................... 11

8. ELECTRICAL CHARACTERISTICS......................................................................................... 12

8.1 Absolute Maximum Ratings .......................................................................................... 12

8.2 D.C. Characteristics...................................................................................................... 12

8.3 A.C. Characteristics ...................................................................................................... 14

9. TIMING WAVEFORMS ............................................................................................................. 16

9.1 Program Fetch Cycle .................................................................................................... 16

9.2 Data Read Cycle........................................................................................................... 17

9.3 Data Write Cycle........................................................................................................... 17

9.4 Port Access Cycle......................................................................................................... 18

10. TYPICAL APPLICATION CIRCUITS ........................................................................................ 19

10.1 Expanded External Program Memory and Crystal ....................................................... 19

10.2 Expanded External Data Memory and Oscillator ......................................................... 20

11. PACKAGE DIMENSIONS ......................................................................................................... 21

11.1 40-pin DIP ..................................................................................................................... 21

11.2 44-pin PLCC ................................................................................................................. 21

11.3 44-pin PQFP ................................................................................................................. 22

12. REVISION HISTORY ................................................................................................................ 23

DataSheet4U.com

Publication Release Date: May 16, 2005

- 1 - Revision A3

DataSheet4 U .com

DataShee

www.DataSheet4U.com

W78E52C

et4U.com

4. PIN DESCRIPTION

SYMBOL

DESCRIPTIONS

EXTERNAL ACCESS ENABLE: This pin forces the processor to execute out of

external ROM. It should be kept high to access internal ROM. The ROM address and

EA data will not be presented on the bus if EA pin is high and the program counter is

within on-chip ROM area.

PSEN

ALE

RST

PROGRAM STORE ENABLE: PSEN enables the external ROM data onto the Port 0

address/ data bus during fetch and MOVC operations. When internal ROM access is

performed, no PSEN strobe signal outputs from this pin.

ADDRESS LATCH ENABLE: ALE is used to enable the address latch that separates

the address from the data on Port 0.

RESET: A high on this pin for two machine cycles while the oscillator is running resets

the device.

XTAL1

XTAL2

CRYSTAL1: This is the crystal oscillator input. This pin may be driven by an external

clock.

CRYSTAL2: This is the crystal oscillator output. It is the inversion of XTAL1.

VSS

VDD

P0.0−P0.7

GROUND: Ground potential

POWER SUPPLY: Supply voltage for operation.

PORT 0: Port

address/data

0 is

bus

daubriin-dgiraecccDtieoasntsaaeSlsIh/Oteoepet4oxUrtet.rcwnohamilcmh eamlsoorpyr.oTvhideePsoartm0uilstipallesxoeadnloowpeonr-der

drain port and external pull-ups need to be connected while in programming.

P1.0−P1.7

PORT 1: Port 1 is a bi-directional I/O port with internal pull-ups. The bits have alternate

functions which are described below:

T2(P1.0): Timer/Counter 2 external count input

T2EX(P1.1): Timer/Counter 2 Reload/Capture control

P2.0−P2.7

P3.0−P3.7

PORT 2: Port 2 is a bi-directional I/O port with internal pull-ups. This port also provides

the upper address bits for accesses to external memory.

PORT 3: Port 3 is a bi-directional I/O port with internal pull-ups. All bits have alternate

functions, which are described below:

RXD(P3.0) : Serial Port receiver input

TXD(P3.1) : Serial Port transmitter output

INT0 (P3.2) : External Interrupt 0

INT1(P3.3) : External Interrupt 1

T0(P3.4) : Timer 0 External Input

T1(P3.5) : Timer 1 External Input

WR (P3.6) : External Data Memory Write Strobe

RD (P3.7) : External Data Memory Read Strobe

PORT 4: Another bit-addressable bidirectional I/O port P4. P4.3 and P4.2 are alternative

P4.0-P4.3 function pins. It can be used as general I/O port or external interrupt input sources

(INT2 /INT3 ).

DataSheet4U.com

DataSheet4 U .com

-4-

DataShee

4페이지

www.DataSheet4U.com

W78E52C

et4U.com

Eight-source interrupt information:

INTERRUPT SOURCE

VECTOR

ADDRESS

External Interrupt 0

Timer/Counter 0

External Interrupt 1

Timer/Counter 1

Serial Port

Timer/Counter 2

External Interrupt 2

External Interrupt 3

03H

0BH

13H

1BH

23H

2BH

33H

3BH

POLLING

SEQUENCE WITHIN

PRIORITY LEVEL

0 (highest)

7 (lowest)

ENABLE

REQUIRED

SETTINGS

IE.0

IE.1

IE.2

IE.3

IE.4

IE.5

XICON.2

XICON.6

INTERRUPT

TYPE

EDGE/LEVEL

TCON.0

TCON.2

XICON.0

XICON.3

PORT4

Another bit-addressable port P4 is also available and only 4 bits (P4<3:0>) can be used. This port

address is located at 0D8H with the same function as that of port P1, except the P4.3 and P4.2 are

alternative function pins. It can be used as general I/O pins or external interrupt input sources ( INT2 ,

INT3 ).

Example:

DataSheet4U.com

P4 REG 0D8H

MOV P4, #0AH

; Output data "A" through P4.0−P4.3.

MOV A, P4

; Read P4 status to Accumulator.

ORL P4,#00000001B ; Set bit P4.0

ANL P4,#11111101B ; Clear bit P4.1

Reduce EMI Emission

Because of on-chip ROM, when a program is running in internal ROM space, the ALE will be unused.

The transition of ALE will cause noise, so it can be turned off to reduce the EMI emission if it is

useless. Turning off the ALE signal transition only requires setting the bit 0 of the AUXR SFR, which is

located at 08Eh. When ALE is turned off, it will be reactivated when the program accesses external

ROM/RAM data or jumps to execute an external ROM code. The ALE signal will turn off again after it

has been completely accessed or the program returns to internal ROM code space. The AO bit in the

AUXR register, when set, disables the ALE output. In order to reduce EMI emission from oscillation

circuitry, W78E52C allows user to diminish the gain of on-chip oscillator amplifiers by using

programmer to clear the B7 bit of security register. Once B7 is set to 0, a half of gain will be

decreased. Care must be taken if user attempts to diminish the gain of oscillator amplifier, reducing a

half of gain may affect the external crystal operating improperly at high frequency above 24 MHz. The

value of R and C1,C2 may need some adjustment while running at lower gain.

DataShee

DataSheet4U.com

DataSheet4 U .com

Publication Release Date: May 16, 2005

- 7 - Revision A3

7페이지

구 성

총 23 페이지수

다운로드

[ W78E052C.PDF 데이터시트 ]

본 사이트를 통해서 주요 제조업체의 전자 부품 및 장치의 기술 사양을 쉽게 찾을 수 있습니다.

당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는

포괄적인 데이터시트 데이터베이스를 제공합니다.

구매 문의

일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한
광범위한 전력 반도체를 판매합니다.

전력 반도체 전문업체

상호 : 아이지 인터내셔날

사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ]

W78E052C 데이터시트 PDF

특징 및 기능

PDF 형식의 W78E052C 자료 제공

관련 데이터시트

사이트 맺음말

부품번호	상세설명 및 기능	제조사
W78E052C	8-Bit Microcontroller	Winbond Electronics
W78E052D	8-BIT MICROCONTROLLER	Nuvoton