PIC16C781-I/P Microchip Technology, PIC16C781-I/P Datasheet - Page 61

• Manufacturer Part Number: PIC16C781-I/P
• Description: IC MCU OTP 1KX14 W/AD COMP 20DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C781-I/P

• Core Size: 8-Bit
• Program Memory Size: 1.75KB (1K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x8b; D/A 1x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Controller Family/series: PIC16C
• No. Of I/o's: 16
• Ram Memory Size: 128Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Processor Series: PIC16C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 2
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 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
• On-chip Dac: 8 bit, 1 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMINGDVA16XP202 - ADAPTER DEVICE PIC16C781/782DM163012 - BOARD DEMO PICDEM FOR 16C781/782AC164028 - MODULE SKT PROMATEII 20SOIC/DIP
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details
• Other names: PIC16C781I/P

6.3
When the microcontroller is using INTRC w/o CLKOUT,
Timer1 can enable and use the LP oscillator as the
Timer1 oscillator.
operation is solely controlled by the T1OSCEN bit. The
oscillator will operate independently of the TMR1ON
bit, allowing the programmer to start and stop the
Timer/Counter using the TMR1ON bit. The oscillator
will also operate during SLEEP, allowing continuous
timekeeping with Timer1. The electrical requirements
for the LP oscillator, when used as the Timer1 oscilla-
tor, are the same as when the oscillator is used in LP
mode.
TABLE 6-1:
0Bh
0Ch
8Ch
0Eh
0Fh
10h
Legend: x = unknown, u = unchanged, - = unimplemented, read as '0'. Shaded cells are not used by Timer1.
Address
Note:
2001 Microchip Technology Inc.
Timer1 Oscillator for the
PIC16C781/782
INTCON
PIR1
PIE1
TMR1L
TMR1H
T1CON
Name
The oscillator requires a startup and stabi-
lization
T1OSCEN should be set, and a suitable
delay observed, prior to enabling Timer1
(see Section 14.2).
SUMMARY OF REGISTERS ASSOCIATED WITH TIMER1
Least Significant Byte of the 16-bit TMR1 Register
Most Significant Byte of the 16-bit TMR1 Register
LVDIF
LVDIE
Bit 7
When enabled, Timer1 oscillator
GIE
time
—
TMR1GE T1CKPS1 T1CKPS0 T1OSCEN T1SYNC TMR1CS TMR1ON -000 0000 -uuu uuuu
before
PEIE
ADIF
ADIE
Bit 6
use.
C2IE
Bit 5
T0IE
C2IF
Therefore,
INTE
C1IE
Bit 4
C1IF
Preliminary
RBIE
Bit 3
—
—
6.4
The TMR1 register pair (TMR1H and TMR1L) incre-
ments from 0000h to FFFFh and then rolls over to
0000h. When Timer1 rolls over, the TMR1IF bit
(PIR1<0>) is set. To enable an interrupt, the TMR1IE
bit (PIE1<0>), the GIE (INTCON<7>) and the PEIE bit
(INTCON<6>) must be set prior to rollover. To clear the
interrupt, the TMR1IF must be cleared by software prior
to re-enabling interrupts.
6.5
Only POR and BOR Resets clear T1CON, disabling
Timer1. All other RESETS do not affect Timer1.
Note:
Bit 2
T0IF
—
—
Timer1 Interrupt
Effects of RESET
When enabling the Timer1 interrupt, the
user should clear both TMR1 registers and
the TMR1IF prior to enabling interrupts.
PIC16C781/782
Bit 1
INTF
—
—
TMRIE
TMRIF
RBIF
Bit 0
0000 000X 0000 000u
0000 ---0 0000 ---0
0000 ---0 0000 ---0
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
Value on:
POR,
BOR
DS41171A-page 59
Value on
RESETS
all other