12F508 Microchip Technology, 12F508 Datasheet - Page 25
12F508
Manufacturer Part Number
12F508
Description
Search -----> PIC12F508
Manufacturer
Microchip Technology
Datasheet
1.12F508.pdf
(98 pages)
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REGISTER 4-4:
© 2005 Microchip Technology Inc.
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
OPTION REGISTER (PIC16F505)
RBWU: Enable Wake-up on Pin Change bit (RB0, RB1, RB3, RB4)
1 = Disabled
0 = Enabled
RBPU: Enable Weak Pull-ups bit (RB0, RB1, RB3, RB4)
1 = Disabled
0 = Enabled
T0CS: Timer0 clock Source Select bit
1 = Transition on T0CKI pin (overrides TRIS on the T0CKI pin)
0 = Transition on internal instruction cycle clock, F
T0SE: Timer0 Source Edge Select bit
1 = Increment on high-to-low transition on the T0CKI pin
0 = Increment on low-to-high transition on the T0CKI pin
PSA: Prescaler Assignment bit
1 = Prescaler assigned to the WDT
0 = Prescaler assigned to Timer0
PS<2:0>: Prescaler Rate Select bits
Legend:
R = Readable bit
-n = Value at POR
RBWU
W-1
bit 7
Bit Value Timer0 Rate WDT Rate
000
001
010
011
100
101
110
111
RBPU
W-1
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
1 : 256
T0CS
W-1
Preliminary
W = Writable bit
‘1’ = Bit is set
PIC12F508/509/16F505
1 : 1
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
T0SE
W-1
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
OSC
PSA
W-1
/4
W-1
PS2
x = Bit is unknown
PS1
W-1
DS41236B-page 23
PS0
bit 0
W-1
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