PIC16F874A-I/PT Microchip Technology, PIC16F874A-I/PT Datasheet - Page 182
![IC MCU FLASH 4K 20MHZ 44-TQFP](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC16F874A-I/PT
Manufacturer Part Number
PIC16F874A-I/PT
Description
IC MCU FLASH 4K 20MHZ 44-TQFP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16C770-ISO.pdf
(8 pages)
4.PIC16F873A-ISO.pdf
(234 pages)
5.PIC16F873A-ISO.pdf
(6 pages)
6.PIC16F873A-ISO.pdf
(4 pages)
7.PIC16F873A-ISO.pdf
(6 pages)
8.PIC16F873A-ISO.pdf
(4 pages)
9.PIC16F873A-ISO.pdf
(22 pages)
Specifications of PIC16F874A-I/PT
Program Memory Type
FLASH
Program Memory Size
7KB (4K x 14)
Package / Case
44-TQFP, 44-VQFP
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
33
Eeprom Size
128 x 8
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
192 B
Interface Type
I2C/SPI/USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
33
Number Of Timers
3
Operating Supply Voltage
2 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
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163022, DV164120
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT44PT3 - SOCKET TRAN ICE 44MQFP/TQFPAC164305 - MODULE SKT FOR PM3 44TQFP444-1001 - DEMO BOARD FOR PICMICRO MCUAC164020 - MODULE SKT PROMATEII 44TQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F874A-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
PIC16F874A-I/PT
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16C770-ISO PDF datasheet #3
- PIC16F873A-ISO PDF datasheet #4
- PIC16F873A-ISO PDF datasheet #5
- PIC16F873A-ISO PDF datasheet #6
- PIC16F873A-ISO PDF datasheet #7
- PIC16F873A-ISO PDF datasheet #8
- PIC16F873A-ISO PDF datasheet #9
- Current page: 182 of 688
- Download datasheet (3Mb)
PICmicro MID-RANGE MCU FAMILY
12.1
DS31012A-page 12-2
Introduction
The Timer1 module is a 16-bit timer/counter consisting of two 8-bit registers (TMR1H and
TMR1L) which are readable and writable. The TMR1 Register pair (TMR1H:TMR1L) increments
from 0000h to FFFFh and rolls over to 0000h. The Timer1 Interrupt, if enabled, is generated on
overflow which is latched in the TMR1IF interrupt flag bit. This interrupt can be enabled/disabled
by setting/clearing the TMR1IE interrupt enable bit.
Timer1 can operate in one of three modes:
• As a synchronous timer
• As a synchronous counter
• As an asynchronous counter
The operating mode is determined by clock select bit, TMR1CS (T1CON<1>), and the synchro-
nization bit, T1SYNC
In timer mode, Timer1 increments every instruction cycle. In counter mode, it increments on
every rising edge of the external clock input on pin T1CKI.
Timer1 can be turned on and off using theTMR1ON control bit (T1CON<0>).
Timer1 also has an internal “reset input”, which can be generated by a CCP module.
Timer1 has the capability to operate off an external crystal. When the Timer1 oscillator is enabled
(T1OSCEN is set), the T1OSI and T1OSO pins become inputs. That is, their corresponding TRIS
values are ignored.
Figure 12-1: Timer1 Block Diagram
T1OSO/
T1CKI
T1OSI
Set TMR1IF flag bit
on Overflow
Note 1: When the T1OSCEN bit is cleared, the inverter and feedback resistor are turned
off. This eliminates power drain.
TMR1H
T1OSC
(Figure
TMR1
TMR1L
Oscillator
Enable
12-1).
T1OSCEN
CLR
(1)
Internal
Clock
F
OSC
TMR1ON
/4
CCP Special Trigger
on/off
TMR1CS
1
0
T1CKPS1:T1CKPS0
T1SYNC
Prescaler
1, 2, 4, 8
0
1
1997 Microchip Technology Inc.
2
Synchronized
clock input
Synchronize
SLEEP input
det
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