PIC16C73B-04I/SP Microchip Technology Inc., PIC16C73B-04I/SP Datasheet - Page 20
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PIC16C73B-04I/SP
Manufacturer Part Number
PIC16C73B-04I/SP
Description
Microcontroller; 28-Pin; 8-Bit CMOS; A/D Conv (5); 20 MHz Clk; 22 I/O, 11 Inter
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16C73B-04ISP.pdf
(184 pages)
Specifications of PIC16C73B-04I/SP
A/d Inputs
5-Channel, 8-Bit
Cpu Speed
5 MIPS
Eeprom Memory
0 Bytes
Input Output
22
Interface
I2C/SPI/USART
Memory Type
OTP
Number Of Bits
8
Package Type
28-pin SPDIP
Programmable Memory
7K Bytes
Ram Size
192 Bytes
Speed
4 MHz
Timers
2-8-bit, 1-16-bit
Voltage, Range
2.5-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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PIC16C63A/65B/73B/74B
4.2.2.2
The OPTION_REG register is a readable and writable
register, which contains various control bits to configure
the TMR0/WDT prescaler, the external INT Interrupt,
TMR0 and the weak pull-ups on PORTB.
REGISTER 4-2:
DS30605C-page 20
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
OPTION Register
OPTION_REG REGISTER (ADDRESS 81h)
RBPU: PORTB Pull-up Enable bit
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 (CLKOUT)
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
bit 7
R/W-1
RBPU
Bit Value
000
001
010
011
100
101
110
111
INTEDG
R/W-1
TMR0 Rate
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
1 : 256
R/W-1
T0CS
WDT Rate
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
2000 Microchip Technology Inc.
x = Bit is unknown
R/W-1
PS1
R/W-1
PS0
bit 0
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