PIC16C72-20/SP Microchip Technology, PIC16C72-20/SP Datasheet - Page 3

• Manufacturer Part Number: PIC16C72-20/SP
• Description: IC MCU OTP 2KX14 A/D PWM 28DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C72-20/SP

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Data Converters: A/D 5x8b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• 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: 1 x 16 bit
• Operating Supply Voltage: 2.5 V to 6 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000, DM163022
• Minimum Operating Temperature: 0 C
• On-chip Adc: 5 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: Q858228

7. Module: Timer1
EXAMPLE 2:
EXAMPLE 3:
 2001 Microchip Technology Inc.
The Timer1 value may unexpectedly increment if
either the TMR1H, or the TMR1L register is writ-
ten. If Timer1 is ON and then turned OFF, perform-
ing any write instruction with TMR1H as the
destination, may cause TMR1L to increment.
BSF T1CON, TMR1ON
BCF T1CON, TMR1ON
MOVF TMR1H, 1
TMR1 value before MOVF instruction:
TMR1 value after MOVF instruction:
BSF T1CON, TMR1ON
BCF T1CON, TMR1ON
MOVF TMR1H, 1
TMR1 value before MOVF instruction:
TMR1 value after MOVF instruction:
TMR1H:TMR1L = FF:FF
TMR1H:TMR1L = FF:00
TMR1H:TMR1L = 3F:00
TMR1H:TMR1L = 3F:01
:
:
TMR1L INCREMENT
(CASE 1)
TMR1L INCREMENT
(CASE 2)
EXAMPLE 4:
If Timer1 is ON and then turned OFF when
TMR1H:TMR1L = xx:FF, performing any write
instruction with TMR1L as the destination may
cause TMR1H to increment.
Work around
To preserve Timer1 register values:
a) Read Timer1 register values into “shadow”
b) Perform any write instruction(s) on the
c) Write the shadow register values back into
BSF T1CON, TMR1ON
BCF T1CON, TMR1ON
CLRF TMR1L
TMR1 value before CLRF instruction:
TMR1 value after CLRF instruction:
(TMR1IF is not set.)
registers.
shadow registers.
the Timer1 registers.
TMR1H:TMR1L = FF:FF
TMR1H:TMR1L = 00:00
TMR1H INCREMENT
PIC16C72
DS80092A-page 3