PIC16C923-08I/SP Microchip Technology, PIC16C923-08I/SP Datasheet - Page 3

• Manufacturer Part Number: PIC16C923-08I/SP
• Description: IC MCU 64 LD 8MHZ 4K OTP 64-SDIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C923-08I/SP

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SPI
• Peripherals: LCD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: OTP
• Ram Size: 176 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-SDIP (0.750", 19.05mm)
• For Use With: AC164025 - MODULE SKT PROMATEII 64DIPDVA16XP640 - ADAPTER DEVICE FOR MPLAB-ICE
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Eeprom Size: -
• Data Converters: -

7. Module: Timer1
EXAMPLE 3:
EXAMPLE 4:
EXAMPLE 5:
2001 Microchip Technology Inc.
The Timer1 value may unexpectedly increment if
either the TMR1H or the TMR1L register is written.
If Timer1 is ON, then turned OFF, performing any
write instruction with TMR1H as the destination
may cause TMR1L to increment.
If Timer1 is ON, 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
MOVF TMR1H, 1
TMR1 value before MOVF instruction:
TMR1 value after MOVF instruction:
BSF T1CON, TMR1ON
BCF T1CON, TMR1ON
CLRF TMR1L
TMR1 value before CLRF instruction:
TMR1 value after CLRF instruction:
(TMR1IF is not set.)
BSF T1CON, TMR1ON
BCF T1CON, TMR1ON
MOVF TMR1H, 1
TMR1 value before MOVF instruction:
TMR1 value after MOVF instruction:
registers.
shadow registers.
the Timer1 registers.
TMR1H:TMR1L = FF:FF
TMR1H:TMR1L = FF:00
TMR1H:TMR1L = FF:FF
TMR1H:TMR1L = 00:00
TMR1H:TMR1L = 3F:00
TMR1H:TMR1L = 3F:01
:
:
TMR1L INCREMENT
(CASE 1)
TMR1L INCREMENT
(CASE 2)
TMR1H INCREMENT
PIC16C923
DS80110B-page 3