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參數資料
型號: W742C814
廠商: WINBOND ELECTRONICS CORP
元件分類: 4位微控制器
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述: 4位單片機的小型通用紅外遙控器
文件頁數: 15/46頁
文件大小: 704K
代理商: W742C814
W742C814
Publication Release Date: February 12, 2003
- 15 -
Revision A2
WDTR.0 will be set to one when WDT time out and can be reset to zero by:
P
OWER
O
N
R
ESET
, RESET
PIN
, CLR WDT
Table 2. The bit 1 of WatchDog Timer Register (WDTR) reset item
RESET ITEM
WDTR.1 = 1
0000H
WDTR.1 = 0
0000H
Reset
Program Counter (PC)
Stack Pointer (SP)
ROMPR, PAGE, DBKR, WRP, ACC, CF, ZF, SCR
Registers
IEF, HEF, SEF, HCF, PEF, EVF Flags
DIV0, DIV1
TM0, TM1, MR0, MR1 Registers
Timer 0 Input Clock
Timer 1 Input Clock
MFP Output
PM0 Register
PM1, PM2, PM5 Registers
PSR0 Register
Input/Output Orts RA, RB, RD
Output Ports RE
RA, RB Ports Output Type
RC Port Pull-high Resistors
Input Clock of the Watchdog Timer
DTMF Output
BUZCR Register
F
LCD
LCD Display
LCDR
Segment Output Mode
-
-
Reset
IEF = Reset
Reset
Reset
Reset
F
OSC
/4
F
OSC
Low
Reset
Set (1111B)
Reset
Input mode
High
CMOS type
Disable
F
OSC
/2048
Hi-Z
Reset
Q5 to Q9 Reset
OFF
Reset
LCD drive output
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-: keep the status
Note: SCR.2 is reserved
6.11 Timer/Counter
6.11.1 Timer 0 (TM0)
Timer 0 (TM0) is a programmable 8-bit binary down-counter. The specified value can be loaded into
TM0 by executing the MOV TM0L(TM0H),R instructions. When the MOV TM0L(TM0H),R instructions
are executed, it will stop the TM0 down-counting (if the TM0 is down-counting) and reset the MR0.3 to
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