參數(shù)資料
型號: PIC16C56A-20I/JW
元件分類: 微控制器/微處理器
英文描述: 8-BIT, UVPROM, 20 MHz, RISC MICROCONTROLLER, CDIP18
封裝: 0.300 INCH, WINDOWED, CERDIP-18
文件頁數(shù): 89/158頁
文件大?。?/td> 1194K
代理商: PIC16C56A-20I/JW
PIC16C5X
DS30453C-page 36
Preliminary
2000 Microchip Technology Inc.
TABLE 7-3:
RESET CONDITIONS FOR SPECIAL REGISTERS
TABLE 7-4:
RESET CONDITIONS FOR ALL REGISTERS
FIGURE 7-8:
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
Condition
PCL
Addr: 02h
STATUS
Addr: 03h
Power-on Reset
1111 1111
0001 1xxx
MCLR Reset (normal operation)
1111 1111
000u uuuu(1)
MCLR Wake-up (from SLEEP)
1111 1111
0001 0uuu
WDT Reset (normal operation)
1111 1111
0000 uuuu(2)
WDT Wake-up (from SLEEP)
1111 1111
0000 0uuu
Legend: u = unchanged, x = unknown, - = unimplemented read as ’0’.
Note 1: TO and PD bits retain their last value until one of the other RESET conditions occur.
2: The CLRWDT instruction will set the TO and PD bits.
Register
Address
Power-on Reset
MCLR or WDT Reset
WN/A
xxxx xxxx
uuuu uuuu
TRIS
N/A
1111 1111
OPTION
N/A
--11 1111
INDF
00h
xxxx xxxx
uuuu uuuu
TMR0
01h
xxxx xxxx
uuuu uuuu
PCL(1)
02h
1111 1111
STATUS(1)
03h
0001 1xxx
000q quuu
FSR
04h
1xxx xxxx
1uuu uuuu
PORTA
05h
---- xxxx
---- uuuu
PORTB
06h
xxxx xxxx
uuuu uuuu
PORTC(2)
07h
xxxx xxxx
uuuu uuuu
General Purpose Register Files
07-7Fh
xxxx xxxx
uuuu uuuu
Legend: u = unchanged, x = unknown, - = unimplemented, read as ’0’,
q
= see tables in Section 7.7 for possible values.
Note 1: See Table 7-3 for RESET value for specific conditions.
2: General purpose register file on PIC16C54/CR54/C56/CR56/C58/CR58.
8-bit Asynch
Ripple Counter
(Start-Up Timer)
SQ
R
Q
VDD
MCLR/VPP pin
Power-up
Detect
On-Chip
RC OSC
POR (Power-on Reset)
WDT Time-out
RESET
CHIP RESET
WDT
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