參數(shù)資料
型號(hào)： W78E858
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, FLASH, 40 MHz, MICROCONTROLLER, PDIP40
封裝： DIP-40
文件頁(yè)數(shù)： 6/33頁(yè)
文件大小： 1186K
代理商： W78E858
W78E858
- 6 -
5. BLOCK DIAGRAM
RAM
256
RAM 256
Bytes
Auxiliary
RAM 512
Bytes
Auxiliary
MTP-ROM
4K Bytes
Main
MTP-ROM
32K Bytes
CPU
Core
SFR
PORT0
PORT1
PORT2
PORT4
TIMER2
PWM
TIMER1
INT0
INT1
INT2~9
Watch-dog
UART
TIMER0
PORT3
Power Down
Wake Up
EEPROM
128 Bytes
PROGRAMMABLE
CLOCK OUTPUT
Interrupts
8051
Data Bus
6. FUNCTIONAL DESCRIPTION
The W78E858 architecture consists of a core controller surrounded by various registers, four 8-bit
general purpose I/O ports, one 4-bits general purpose I/O port, 256 bytes data RAM and 512 bytes
auxiliary RAM, 128 bytes embedded EEPROM memory, three timer/counters, one serial port, 17-bit
watch-dog timer, 8-bit four channels PWM, programmable timer2 clock output, extra external
interrupts INT2 to INT9, power-down wake up via external interrupts INT0
INT9. The CPU supports
111 different op-codes and references both a 64K program address space and a 64 K data storage
space.
6.1 RAM
The internal data RAM in W78E858
is 768 bytes. It is divided into two banks: 256 bytes of data RAM
and 512 bytes of auxiliary RAM. These RAM are addressed by different ways.
RAM 00H
7FH can be addressed directly and indirectly as the same as in 80C51. Address
pointers are R0 and R1 of the selected register bank.
RAM 80H
FFH can only be addressed indirectly as the same as in 80C51. Address pointers are
R0, R1 of the selected registers bank.
Auxiliary RAM 0000H
01FFH is addressed indirectly as the same way to access external data
memory with the MOVX instruction. Address pointers are R0 and R1 of the selected register bank
and DPTR register. By setting ENAUXRAM
flag
in CHPCON register bit4 to enable on-chip
auxiliary RAM 512 bytes. When the auxiliary RAM is enabled, the data and address will not appear
on P0 and P2, they will keep their previous status that before the MOVX instruction be executed.
Write the page select 00H or 01H to MXPSR register if R0 and R1 are used as address pointer.
When the address of external data memory locations higher than 01FFH or disable auxiliary RAM
512 bytes micro-controller will be performed with the MOVX instruction in the same way as in the
80C51. The auxiliary RAM 512 bytes default is disabled after chip reset.
相關(guān)PDF資料
PDF描述
W78ERD2_07 8-BIT MICROCONTROLLER
W78ERD2A 8-BIT MICROCONTROLLER
W78ERD2A40DL 8-BIT MICROCONTROLLER
W78ERD2A40FL 8-BIT MICROCONTROLLER
W78ERD2A40PL 8-BIT MICROCONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W78E858_06 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78E858A40DL 功能描述:IC MCU 8-BIT 32K FLASH 40-DIP 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:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:- 程序存儲(chǔ)器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR)
W78E858A40FL 功能描述:IC MCU 8-BIT 32K FLASH 44-PQFP 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:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:- 程序存儲(chǔ)器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR)
W78E858A40PL 功能描述:IC MCU 8-BIT 32K FLASH 44-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:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:- 程序存儲(chǔ)器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR)
W78ERD2 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
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