PIC12C671-04I/P Microchip Technology Inc., PIC12C671-04I/P Datasheet - Page 16

• Manufacturer Part Number: PIC12C671-04I/P
• Description: 8 PIN, 1.75 KB OTP, 128 RAM, 6 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC12C671-04I/P

• A/d Inputs: 4-Channel, 8-Bit
• Cpu Speed: 2.5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 5
• Memory Type: OTP
• Number Of Bits: 8
• Package Type: 8-pin PDIP
• Programmable Memory: 1.75K Bytes
• Ram Size: 128 Bytes
• Speed: 4 MHz
• Timers: 1-8-bit
• Voltage, Range: 2.5-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC12C67X
4.2.2.2
The OPTION Register is a readable and writable regis-
ter, which contains various control bits to configure the
TMR0/WDT prescaler, the External INT Interrupt,
TMR0 and the weak pull-ups on GPIO.
REGISTER 4-2:
DS30561B-page 16
bit7
bit 7:
bit 6:
bit 5:
bit 4:
bit 3:
bit 2-0: PS<2:0>: Prescaler Rate Select bits
GPPU
R/W-1
OPTION REGISTER
GPPU: Weak Pull-up Enable
1 = Weak pull-ups disabled
0 = Weak pull-ups enabled (GP0, GP1, GP3)
INTEDG: Interrupt Edge
1 = Interrupt on rising edge of GP2/T0CKI/AN2/INT pin
0 = Interrupt on falling edge of GP2/T0CKI/AN2/INT pin
T0CS: TMR0 Clock Source Select bit
1 = Transition on GP2/T0CKI/AN2/INT pin
0 = Internal instruction cycle clock (CLKOUT)
T0SE: TMR0 Source Edge Select bit
1 = Increment on high-to-low transition on GP2/T0CKI/AN2/INT pin
0 = Increment on low-to-high transition on GP2/T0CKI/AN2/INT pin
PSA: Prescaler Assignment bit
1 = Prescaler is assigned to the WDT
0 = Prescaler is assigned to the Timer0 module
INTEDG
Bit Value
R/W-1
000
001
010
011
100
101
110
111
OPTION REGISTER (ADDRESS 81h)
R/W-1
T0CS
TMR0 Rate
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
1 : 256
R/W-1
T0SE
WDT Rate
1 : 1
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
R/W-1
PSA
R/W-1
PS2
R/W-1
Note:
PS1
To achieve a 1:1 prescaler assignment for
the TMR0 register, assign the prescaler to
the Watchdog Timer by setting bit PSA
(OPTION<3>).
R/W-1
PS0
bit0
R = Readable bit
W = Writable bit
U = Unimplemented bit,
- n = Value at POR reset
1999 Microchip Technology Inc.
read as ‘0’