PIC10F220EOT MICROCHIP [Microchip Technology], PIC10F220EOT Datasheet - Page 19
PIC10F220EOT
Manufacturer Part Number
PIC10F220EOT
Description
6-Pin, 8-Bit Flash Microcontrollers
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC10F220EOT.pdf
(78 pages)
- Current page: 19 of 78
- Download datasheet (2Mb)
4.5
The OPTION register is a 8-bit wide, write-only register,
which contains various control bits to configure the
Timer0/WDT prescaler and Timer0.
The OPTION register is not memory mapped and is
therefore only addressable by executing the OPTION
instruction, the contents of the W register will be trans-
ferred to the OPTION register. A Reset sets the
OPTION<7:0> bits.
REGISTER 4-2:
© 2006 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
GPWU
W-1
OPTION Register
GPWU: Enable Wake-up On Pin Change bit (GP0, GP1, GP3)
1 = Disabled
0 = Enabled
GPPU: Enable Weak Pull-ups bit (GP0, GP1, GP3)
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
GPPU
W-1
OPTION REGISTER: (PIC10F22X)
Bit Value Timer0 Rate WDT Rate
000
001
010
011
100
101
110
111
W = Writable bit
‘1’ = Bit is set
T0CS
W-1
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
1 : 256
T0SE
W-1
Preliminary
1 : 1
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
PSA
W-1
Note:
Note:
OSC
/4
If TRIS bit is set to ‘0’, the wake-up on
change and pull-up functions are disabled
for that pin (i.e., note that TRIS overrides
Option control of GPPU and GPWU).
If the T0CS bit is set to ‘1’, it will override
the TRIS function on the T0CKI pin.
PS2
W-1
PIC10F220/222
x = Bit is unknown
W-1
PS1
DS41270B-page 17
PS0
W-1
bit 0
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