PIC16C72A-04I/SO Microchip Technology, PIC16C72A-04I/SO Datasheet - Page 12

• Manufacturer Part Number: PIC16C72A-04I/SO
• Description: IC MCU OTP 2KX14 A/D PWM 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C72A-04I/SO

• Core Size: 8-Bit
• Program Memory Size: 3.5KB (2K x 14)
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Core Processor: PIC
• Speed: 4MHz
• Connectivity: I²C, SPI
• Number Of I /o: 22
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC16C
• No. Of I/o's: 22
• Ram Memory Size: 128Byte
• Cpu Speed: 4MHz
• No. Of Timers: 3
• Processor Series: PIC16C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: I2C, SPI, SSP
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 3
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000, DM163022
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 5 Channel
• Data Rom Size: 128 B
• Height: 2.05 mm
• Length: 17.9 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4 V
• Width: 7.5 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: PIC16C72A-04I/SOR; PIC16C72A-04I/SOR

PIC16C62B/72A
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 known as the prescaler), the External INT
Interrupt, TMR0 and the weak pull-ups on PORTB.
REGISTER 2-2:
DS35008B-page 12
bit7
bit 7:
bit 6:
bit 5:
bit 4:
bit 3:
bit 2-0: PS2:PS0: Prescaler Rate Select bits
R/W-1
RBPU
OPTION_REG REGISTER
RBPU: PORTB Pull-up Enable bit
1 = PORTB pull-ups are disabled
0 = PORTB pull-ups are enabled for all PORTB inputs
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
INTEDG
Bit Value
R/W-1
000
001
010
011
100
101
110
111
OPTION_REG 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
Preliminary
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.
R/W-1
PS0
bit0
R = Readable bit
W = Writable bit
- n = Value at POR reset
1999 Microchip Technology Inc.