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參數資料
型號: W921E880
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-Bit Microcontroller(4位的微控制器)
中文描述: 4-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數: 31/62頁
文件大小: 511K
代理商: W921E880
W921E880
Publication Release Date: August 1997
- 31 -
Revision A1
At any time the STTM2 bit3 goes from 0 to 1 (disable to enable), TM2MSB and TM2LSB will be auto
reloaded to the Timer 2 Set Reg. again and the Timer 2 is restarted. Timer 2 will stop operating when
the STTM2 bit3 is reset to 0.
Timer 2 starts to count when the STTM2 REG. bit3 is set. When Timer 2 overflows, the STTM2 bit3
will be reset by hardware to stop Timer 2 if the auto-reload is disabled, but the STTM2 bit3 will not be
reset if the auto-reload is enabled.
When the Timer 2 function is performed, the special function is automatically disabled.
The format of the trigger condition of the Timer 2 Register is shown as follows:
TGTM2 REG: (ADDRESS = 02EH)
(Default data = 0H)
b3
b2
b1
b0
0: Special function work as pulse/period
width measurement
1: Special function work as arbitrary
waveform generator
0: Arbitrary waveform type 0
1: Arbitrary waveform type 1
b1
b0
0
0
0
1
1
0
1
1
Trigger
-----
Rising
Falling
Both
In pulse/period width measurement mode, the measuring-data is the 1'S complement of the exact
data and the TM2 interrupt flag is set at every 255 timer clock occurences or if the 2nd trigger
condition occurs. So the measured pulse/period width is (255(N 1)
number of interrupt flag occurences,
TM2
is the 1'S complement of timer2 register, and T is the
period of the timer 2 clock. The special function input or output is from or to P5.1.
TM2)*T
+
, where N is the
TM3
can perform the following functions:
1. 2
19 order divider
2. Auto-reload timer.
Sys Clk.
Prescaler 11 bits
TM3 Control Reg.
INTT3
TM3 Set Reg.
(8 bits)
8 Order Divider
INT Control
Reg.
f
TM3
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相關代理商/技術參數
參數描述
W921E880A 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER
W925C240 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Controller
W925C625 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-bit CID MICROCONTROLLER
W925E240 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Controller
W925E240FG 功能描述:IC MCU 8-BIT W/CID 100-PQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:W925 標準包裝: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 外圍設備:POR,PWM,WDT 輸入/輸出數:40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數據轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC(J 形引線) 包裝:帶卷 (TR)