PIC16F57-I/P Microchip Technology, PIC16F57-I/P Datasheet - Page 20

• Manufacturer Part Number: PIC16F57-I/P
• Description: IC MCU FLASH 2KX12 28DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F57-I/P

• Program Memory Type: FLASH
• Program Memory Size: 3KB (2K x 12)
• Package / Case: 28-DIP (0.600", 15.24mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 20
• Ram Size: 72 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 72 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 20
• Number Of Timers: 1
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: DV164120, DV164101, ICE2000
• Minimum Operating Temperature: - 40 C
• Data Rom Size: 2 K
• Height: 3.3 mm
• Length: 34.67 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Width: 7.24 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28XP - SOCKET TRANSITION ICE 28DIPAC164001 - MODULE SKT PROMATEII 18/28DIP
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC16F5X
3.4
The Option register is a 6-bit wide, write-only register
which contains various control bits to configure the
Timer0/WDT prescaler and Timer0.
By executing the OPTION instruction, the contents of
the W register will be transferred to the Option register.
A Reset sets the Option<5:0> bits.
REGISTER 3-2:
DS41213D-page 18
Option Register
bit 7-6
bit 5
bit 4
bit 3
bit 2-0
Unimplemented: Read as ‘0’
T0CS: Timer0 Clock Source Select bit
1 = Transition on T0CKI pin
0 = Internal instruction cycle clock (CLKOUT)
T0SE: Timer0 Source Edge Select bit
1 = Increment on high-to-low transition on T0CKI pin
0 = Increment on low-to-high transition on 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
OPTION REGISTER
bit 7
U-0
—
Bit Value
000
001
010
011
100
101
110
111
U-0
—
Timer0 Rate
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
1 : 256
T0CS
W-1
W = Writable bit
‘1’ = Bit is set
WDT Rate
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
PSA
W-1
PS2
W-1
© 2007 Microchip Technology Inc.
x = Bit is unknown
PS1
W-1
PS0
W-1
bit 0