參數(shù)資料
型號: PIC16F628A
廠商: Microchip Technology Inc.
英文描述: 18-pin Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology(18引腳,基于FLASH的8位CMOS微控制器,使用毫微瓦特技術(shù))
中文描述: 18引腳基于閃存的8位CMOS微控制器與納瓦技術(shù)(18引腳,基于閃存的8位的CMOS微控制器,使用毫微瓦特技術(shù))
文件頁數(shù): 103/168頁
文件大?。?/td> 2756K
代理商: PIC16F628A
2004 Microchip Technology Inc.
Preliminary
DS40044B-page 101
PIC16F627A/628A/648A
TABLE 14-7:
INITIALIZATION CONDITION FOR REGISTERS
Register
Address
Power-on
Reset
MCLR Reset during normal
operation
MCLR Reset during Sleep
WDT Reset
Brown-out Reset
(1)
Wake-up from Sleep
(7)
through interrupt
Wake-up from Sleep
(7)
through WDT time out
W
INDF
TMR0
PCL
00h
xxxx xxxx
uuuu uuuu
uuuu uuuu
01h, 101h
02h, 82h,
102h, 182h
03h, 83h,
103h, 183h
04h, 84h,
104h, 184h
05h
06h, 106h
0Ah, 8Ah,
10Ah, 18Ah
0Bh, 8Bh,
10Bh,18Bh
0Ch
0Eh
0Fh
10h
11h
12h
15h
16h
17h
18h
19h
1Ah
1Fh
81h,181h
85h
86h, 186h
8Ch
8Eh
92h
98h
99h
9Ah
9Bh
9Ch
9Dh
9Fh
xxxx xxxx
uuuu uuuu
uuuu uuuu
PC + 1
(3)
0000 0000
0000 0000
STATUS
0001 1xxx
000q quuu
(4)
uuuq 0uuu
(4)
FSR
xxxx xxxx
uuuu uuuu
uuuu uuuu
PORTA
PORTB
PCLATH
xxxx 0000
xxxx 0000
uuuu uuuu
xxxx xxxx
uuuu uuuu
uuuu uuuu
---0 0000
---0 0000
---u uuuu
INTCON
0000 000x
0000 000u
uuuu uqqq
(2)
PIR1
TMR1L
TMR1H
T1CON
TMR2
T2CON
CCPR1L
CCPR1H
CCP1CON
RCSTA
TXREG
RCREG
CMCON
OPTION
TRISA
TRISB
PIE1
PCON
PR2
TXSTA
SPBRG
EEDATA
EEADR
EECON1
EECON2
VRCON
0000 -000
0000 -000
qqqq -qqq
(2)
xxxx xxxx
uuuu uuuu
uuuu uuuu
xxxx xxxx
uuuu uuuu
--uu uuuu
(6)
uuuu uuuu
--00 0000
--uu uuuu
0000 0000
0000 0000
uuuu uuuu
-000 0000
-000 0000
-uuu uuuu
xxxx xxxx
uuuu uuuu
uuuu uuuu
xxxx xxxx
uuuu uuuu
uuuu uuuu
--00 0000
--00 0000
--uu uuuu
0000 000x
0000 000x
uuuu uuuu
0000 0000
0000 0000
uuuu uuuu
0000 0000
0000 0000
uuuu uuuu
0000 0000
0000 0000
uu-- uuuu
1111 1111
1111 1111
uuuu uuuu
1111 1111
1111 1111
uuuu uuuu
1111 1111
1111 1111
uuuu uuuu
0000 -000
0000 -000
---- 1-uq
(1,5)
uuuu -uuu
---- 1-0x
---- u-uu
1111 1111
1111 1111
uuuu uuuu
0000 -010
0000 -010
uuuu -uuu
0000 0000
0000 0000
uuuu uuuu
xxxx xxxx
uuuu uuuu
uuuu uuuu
xxxx xxxx
uuuu uuuu
uuuu uuuu
---- x000
---- q000
---- uuuu
000- 0000
000- 0000
uuu- uuuu
Legend:
Note
u
= unchanged,
x
= unknown,
-
= unimplemented bit, reads as ‘0’,
q
= value depends on condition.
If V
DD
goes too low, Power-on Reset will be activated and registers will be affected differently.
One or more bits in INTCON and PIR1 will be affected (to cause wake-up).
When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector (0004h).
See Table 14-6 for Reset value for specific condition.
If Reset was due to brown-out, then bit 0 = 0. All other Resets will cause bit 0 = u.
Reset to ‘
--
00 0000’ on a Brown-out Reset (BOR).
Peripherals generating interrupts for wake-up from Sleep will change the resulting bits in the associated registers.
1:
2:
3:
4:
5:
6:
7:
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