W78C438C40FL datasheet, PDF - EEWORLD Datasheet

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W78C438C40FL: DescriptionIC mcu 8-bit romless 100-pqfp; CategoryThe embedded processor and controller Microcontrollers and processors; File Size356KB，20 Pages; ManufacturerNuvoton Technology Corporation; Websitehttp://www.nuvoton.com.cn/hq/; Environmental Compliance

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W78C438C40FL Overview

IC mcu 8-bit romless 100-pqfp

W78C438C40FL Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Nuvoton Technology Corporation
Parts packaging code	QFP
package instruction	QFP, QFP100,.7X.9,32
Contacts	100
Reach Compliance Code	compliant
ECCN code	3A991.A.2
Has ADC	NO
Address bus width	20
bit size	8
CPU series	8051
maximum clock frequency	40 MHz
DAC channel	NO
DMA channel	NO
External data bus width	8
JESD-30 code	R-PQFP-G100
JESD-609 code	e3
length	20 mm
Humidity sensitivity level	3
Number of I/O lines	40
Number of terminals	100
Maximum operating temperature	70 °C
Minimum operating temperature
PWM channel	NO
Package body material	PLASTIC/EPOXY
encapsulated code	QFP
Encapsulate equivalent code	QFP100,.7X.9,32
Package shape	RECTANGULAR
Package form	FLATPACK
Peak Reflow Temperature (Celsius)	260
power supply	5 V
Certification status	Not Qualified
RAM (bytes)	256
rom(word)	0
Maximum seat height	3.3 mm
speed	40 MHz
Maximum slew rate	20 mA
Maximum supply voltage	5.5 V
Minimum supply voltage	4.5 V
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	40
width	14 mm
uPs/uCs/peripheral integrated circuit type	MICROCONTROLLER

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W78C438C Data Sheet

8-BIT MICROCONTROLLER

Table of Contents-

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

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

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

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

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

5.1

5.2

5.3

5.4

5.5

5.6

6.1

6.2

6.3

Dedicated Data and Address Port .................................................................................. 6

Additional I/O Port ........................................................................................................... 8

Additional External Interrupt ............................................................................................ 8

Newly Added Special Function Registers ..................................................................... 10

Power Reduction Function ............................................................................................ 10

Programming Difference ............................................................................................... 11

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

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

A.C. Characteristics ...................................................................................................... 13

6.3.1

6.3.2

6.3.3

Clock Input Waveform .................................................................................................... 13

Program Fetch Cycle...................................................................................................... 13

Data Memory Read/Write Cycle ..................................................................................... 14

ELECRICAL CHARACTERISTICS ........................................................................................... 12

TIMING WAVEFORMS ............................................................................................................. 15

7.1

7.2

Program Fetch Cycle .................................................................................................... 15

Data Memory Read/Write Cycle ................................................................................... 16

Using 128K

8 bit External EPROM (W27E010) ......................................................... 17

100-pin QFP .................................................................................................................. 19

TYPICAL APPLICATION CIRCUITS......................................................................................... 17

8.1

10.

PACKAGE DIMENSIONS ......................................................................................................... 19

9.1

REVISION HISTORY ................................................................................................................ 20

-1-

Publication Release Date: March 10, 2010

Revision A7

W78C438C

1. GENERAL DESCRIPTION

The W78C438C is a high-performance single-chip CMOS 8-bit microcontroller that is a derivative of

the W78C58 microcontroller family. The W78C438C is functionally compatible with the W78C32,

except that it provides either a 64 KB program/1 MB data memory address or memory-mapped chip

select logic, five general I/O ports, and four external interrupts.

In the W78C32, two I/O ports, Port 1 and Port 3, are available for general-purpose use (Port 3 also

supports alternative functions), and Port 2 and Port 0 are used as the address bus and data bus,

respectively. To enable Port 0 and Port 2 to also be used as general purpose I/O ports, the W78C438C

provides two dedicated address ports (AP5 and AP6) that serve as address output for 64 KB of

memory and one address/data port (DP4) that serves as ROM code input and external RAM data

input/output. Unlike the W78C32, this product does not require an external latch device for multiplexing

low byte addresses. The W78C438C also provides four pins (AP7.0−AP7.3) to support either 64 KB

program/1 MB data memory space or memory-mapped chip select logic, one parallel I/O port (Port 8)

without bit addressing mode, and two additional external interrupts (

INT2

INT3

) .

The W78C438C is programmed in a manner fully compatible with that used to program the W78C32,

except that the external data RAM is accessed by the "MOVX @Ri" instruction. Address paging is

performed by loading page addresses into the HB (high byte) register, which is not a standard register

in the W78C32, before execution of the "MOVX @Ri" instruction.

2. FEATURES



8-bit CMOS microcontroller

Fully static design

DC to 40 MHz operation

ROM-less operation

256-byte on-chip scratchpad RAM

Either 64 KB program/1 MB data memory address space or 4 memory-mapped chip select pins

One 8-bit data/address port

Two 8-bit and one 4-bit (optional) address ports

Five 8-bit bidirectional I/O ports

−

Four 8-bit bit-addressable I/O ports and one 8-bit parallel I/O port

Eight-source, two-level interrupt capability

Three 16-bit timer/counters

Four external interrupts

One full-duplex serial channel

Built-in power management

−

Idle mode

−

Power-down mode

Packages:

−

Lead Free (RoHS) PQFP 100: W78C438C40FL



-2-

W78C438C40FL Related Products

	W78C438C40FL	W78C438CF-40	W78C438CP-40
Description	IC mcu 8-bit romless 100-pqfp	Microcontroller, 8-Bit, 8051 CPU, 20MHz, CMOS, PQFP100,	Microcontroller, 8-Bit, 8051 CPU, 20MHz, CMOS, PQCC84,
package instruction	QFP, QFP100,.7X.9,32	QFP, QFP100,.7X.9,32	QCCJ, LDCC84,1.2SQ
Reach Compliance Code	compliant	compliant	compliant
bit size	8	8	8
CPU series	8051	8051	8051
JESD-30 code	R-PQFP-G100	R-PQFP-G100	S-PQCC-J84
Number of terminals	100	100	84
Maximum operating temperature	70 °C	70 °C	70 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	QFP	QFP	QCCJ
Encapsulate equivalent code	QFP100,.7X.9,32	QFP100,.7X.9,32	LDCC84,1.2SQ
Package shape	RECTANGULAR	RECTANGULAR	SQUARE
Package form	FLATPACK	FLATPACK	CHIP CARRIER
power supply	5 V	5 V	5 V
Certification status	Not Qualified	Not Qualified	Not Qualified
RAM (bytes)	256	256	256
speed	40 MHz	20 MHz	20 MHz
Maximum slew rate	20 mA	20 mA	20 mA
Nominal supply voltage	5 V	5 V	5 V
surface mount	YES	YES	YES
technology	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal form	GULL WING	GULL WING	J BEND
Terminal pitch	0.65 mm	0.8 mm	1.27 mm
Terminal location	QUAD	QUAD	QUAD
Base Number Matches	-	1	1

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