參數(shù)資料
型號(hào)： W78C438C40FL
廠商： WINBOND ELECTRONICS CORP
元件分類： 微控制器/微處理器
英文描述： 8-BIT MICROCONTROLLER
中文描述： 8-BIT, 40 MHz, MICROCONTROLLER, PQFP100
封裝： ROHS COMPLIANT, PLASTIC, QFP-100
文件頁(yè)數(shù)： 2/22頁(yè)
文件大?。?/td> 266K
代理商： W78C438C40FL
W78C438C
- 2 -
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
y
8-bit CMOS microcontroller
y
Fully static design
y
DC to 40 MHz operation
y
ROM-less operation
y
256-byte on-chip scratchpad RAM
y
Either 64 KB program/1 MB data memory address space or 4 memory-mapped chip select pins
y
One 8-bit data/address port
y
Two 8-bit and one 4-bit (optional) address ports
y
Five 8-bit bidirectional I/O ports
Four 8-bit bit-addressable I/O ports and one 8-bit parallel I/O port
y
Eight-source, two-level interrupt capability
y
Three 16-bit timer/counters
y
Four external interrupts
y
One full-duplex serial channel
y
Built-in power management
Idle mode
Power-down mode
y
Packages:
Lead Free (RoHS) PLCC 84:
W78C438C40PL
Lead Free (RoHS) PQFP 100: W78C438C40FL
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W78C438C40PL 功能描述:IC MCU 8-BIT ROMLESS 84-PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W78 標(biāo)準(zhǔn)包裝:60 系列:PSOC® 3 CY8C38xx 核心處理器:8051 芯體尺寸:8-位 速度:67MHz 連通性:EBI/EMI，I²C，LIN，SPI，UART/USART 外圍設(shè)備:電容感應(yīng)，DMA，LCD，POR，PWM，WDT 輸入/輸出數(shù):25 程序存儲(chǔ)器容量:64KB（64K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:2K x 8 RAM 容量:8K x 8 電壓 - 電源 (Vcc/Vdd):1.71 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 2x20b，D/A 4x8b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:48-VFQFN 裸露焊盤 包裝:托盤
W78C438CF-24 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78C438CF-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78C438CP-24 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78C438CP-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
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