Publication Release Date: April 22, 2008 - 3 - Revision A8 1. GENERAL DESCRIPTION The W78E858 is an 8-bit microcontroller" />
參數(shù)資料
型號(hào)： W78E858A40FL
廠商： Nuvoton Technology Corporation of America
文件頁(yè)數(shù)： 23/35頁(yè)
文件大?。?/td> 0K
描述： IC MCU 8-BIT 32K FLASH 44-PQFP
標(biāo)準(zhǔn)包裝： 96
系列： W78
核心處理器： 8052
芯體尺寸： 8-位
速度： 40MHz
連通性： EBI/EMI，串行端口
外圍設(shè)備： POR，PWM，WDT
輸入/輸出數(shù)： 36
程序存儲(chǔ)器容量： 32KB（32K x 8）
程序存儲(chǔ)器類型： 閃存
RAM 容量： 768 x 8
電壓 - 電源 (Vcc/Vdd)： 4.5 V ~ 5.5 V
振蕩器型： 內(nèi)部
工作溫度： 0°C ~ 70°C
封裝/外殼： 44-BQFP
包裝： 托盤
W78E858
Publication Release Date: April 22, 2008
- 3 -
Revision A8
1. GENERAL DESCRIPTION
The W78E858 is an 8-bit microcontroller which has an in-system programmable Flash EPROM for
firmware updating. The instruction set of the W78E858 is fully compatible with the standard 8052. The
W78E858 contains a 32K bytes of main Flash EPROM and a 4K bytes of auxiliary Flash EPROM
which allows the contents of the 32KB main Flash EPROM to be updated by the loader program
located at the 4KB auxiliary Flash EPROM ROM; 768 bytes of on-chip RAM; 128 bytes of EEPROM, 8
extra power down wake-up through INT2 to INT9; 4 channel 8-bit PWM; four 8-bit bi-directional and
bit-addressable I/O ports; an additional 4-bit port P4; three 16-bit timer/counters where the TIMER2
with programmable clock output and 17-bit watchdog timer are built in this device; a serial port. These
peripherals are supported by a eight sources two-level interrupt capability. To facilitate programming
and verification, the Flash EPROM inside the W78E858 allows the program memory to be
programmed and read electronically. Once the code is confirmed, the user can protect the code for
security.
2. FEATURES
Fully static design 8-bit CMOS micro-controller up to 40 MHz
32K bytes of in-system programmable FLASH EPROM for Application Program (APROM)
4K bytes of auxiliary FLASH EPROM for Loader Program (LDROM)
Low standby current at full supply voltage
256 + 512 bytes of on-chip RAM
128 bytes on-chip EEPROM memory
64K bytes program memory address space and 64K bytes data memory address space
Four 8-bit bi-directional ports
One 4-bit bi-directional port
Extra interrupts INT2 to INT9 at PORT1
Wake-up via external interrupts INT0
INT9
Three 16-bit timer/counters
One full duplex serial port
Fourteen-sources, two-level interrupt capability
Programmable Timer2 clock output via P1.0
17-bits watchdog timer
Four channels 8-bit PWM
Built-in power management
Code protection
Packaged in PDIP 40 / PLCC 44 / PQFP 44
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