PIC16C923-04/L Microchip Technology, PIC16C923-04/L Datasheet - Page 3

• Manufacturer Part Number: PIC16C923-04/L
• Description: IC MCU OTP 4KX14 LCD DVR 68PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C923-04/L

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 4MHz
• Connectivity: I²C, SPI
• Peripherals: LCD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Type: OTP
• Ram Size: 176 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 68-PLCC
• Controller Family/series: PIC16C
• No. Of I/o's: 25
• Ram Memory Size: 176Byte
• Cpu Speed: 4MHz
• No. Of Timers: 3
• No. Of Pwm Channels: 1
• Core: PIC
• Processor Series: PIC16C
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Data Ram Size: 176 B
• Data Rom Size: 176 B
• Number Of Programmable I/os: 25
• Number Of Timers: 3
• Operating Supply Voltage: 2.5 V to 6 V
• Mounting Style: SMD/SMT
• Height: 4.06 mm
• Interface Type: I2C, SPI
• Length: 24.33 mm
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Supply Voltage (max): 6 V
• Supply Voltage (min): 4 V
• Width: 24.33 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164308 - MODULE SKT FOR PM3 68PLCCDVA16XL680 - ADAPTER DEVICE FOR MPLAB-ICEAC164024 - ADAPTER PICSTART PLUS 68PLCCAC164022 - MODULE SKT PROMATEII 68PLCC
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

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