PIC16F737-I/SO Microchip Technology Inc., PIC16F737-I/SO Datasheet - Page 24
PIC16F737-I/SO
Manufacturer Part Number
PIC16F737-I/SO
Description
MCU, 8-Bit, 4KW Flash, 368 RAM, 25 I/O, SOIC-28
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F737-ISO.pdf
(276 pages)
Specifications of PIC16F737-I/SO
A/d Inputs
11-Channel, 10-Bit
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
0 Bytes
Input Output
25
Interface
I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
28-pin SOIC
Programmable Memory
7K Bytes
Ram Size
368 Bytes
Speed
20 MHz
Timers
2-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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PIC16F7X7
2.2.2.2
The OPTION_REG register is a readable and writable
register which contains various control bits to configure
the TMR0 prescaler/WDT postscaler (single assign-
able register also known as the prescaler), the external
INT interrupt, TMR0 and the weak pull-ups on PORTB.
REGISTER 2-2:
DS30498C-page 22
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
OPTION_REG Register
OPTION_REG: OPTION CONTROL REGISTER (ADDRESS 81h, 181h)
bit 7
RBPU
1 = PORTB pull-ups are disabled
0 = PORTB pull-ups are enabled by individual port latch values
INTEDG: Interrupt Edge Select bit
1 = Interrupt on rising edge of RB0/INT pin
0 = Interrupt on falling edge of RB0/INT pin
T0CS: TMR0 Clock Source Select bit
1 = Transition on RA4/T0CKI pin
0 = Internal instruction cycle clock (CLKO)
T0SE: TMR0 Source Edge Select bit
1 = Increment on high-to-low transition on RA4/T0CKI pin
0 = Increment on low-to-high transition on RA4/T0CKI pin
PSA: Prescaler Assignment bit
1 = Prescaler is assigned to the WDT
0 = Prescaler is assigned to the Timer0 module
PS2:PS0: Prescaler Rate Select bits
Legend:
R = Readable bit
-n = Value at POR
R/W-1
RBPU
Bit Value
:
PORTB Pull-up Enable bit
000
001
010
011
100
101
110
111
INTEDG
R/W-1
TMR0 Rate WDT Rate
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
1 : 256
R/W-1
T0CS
W = Writable bit
‘1’ = Bit is set
1 : 1
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
R/W-1
T0SE
Note:
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
To achieve a 1:1 prescaler assignment for
the TMR0 register, assign the prescaler to
the Watchdog Timer.
R/W-1
PSA
R/W-1
PS2
2004 Microchip Technology Inc.
x = Bit is unknown
R/W-1
PS1
R/W-1
PS0
bit 0
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