PIC16F874-04/PT Microchip Technology, PIC16F874-04/PT Datasheet - Page 144
![IC MCU FLASH 4KX14 EE 44TQFP](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC16F874-04/PT
Manufacturer Part Number
PIC16F874-04/PT
Description
IC MCU FLASH 4KX14 EE 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F873-04SO.pdf
(218 pages)
4.PIC16F873-04SO.pdf
(5 pages)
5.PIC16F873-04SO.pdf
(5 pages)
Specifications of PIC16F874-04/PT
Core Size
8-Bit
Program Memory Size
7KB (4K x 14)
Oscillator Type
External
Core Processor
PIC
Speed
4MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
33
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x10b
Operating Temperature
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Controller Family/series
PIC16F
No. Of I/o's
33
Eeprom Memory Size
128Byte
Ram Memory Size
192Byte
Cpu Speed
4MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F874-04/PT
Manufacturer:
MICROCHIP
Quantity:
4 500
Company:
Part Number:
PIC16F874-04/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F873-04SO PDF datasheet #3
- PIC16F873-04SO PDF datasheet #4
- PIC16F873-04SO PDF datasheet #5
- Current page: 144 of 688
- Download datasheet (3Mb)
PICmicro MID-RANGE MCU FAMILY
9.2
DS31009A-page 9-4
PORTA and the TRISA Register
The RA4 pin is a Schmitt Trigger input and an open drain output. All other RA port pins have TTL
input levels and full CMOS output drivers. All pins have data direction bits (TRIS registers) which
can configure these pins as output or input.
Setting a TRISA register bit puts the corresponding output driver in a hi-impedance mode. Clear-
ing a bit in the TRISA register puts the contents of the output latch on the selected pin(s).
Example 9-1: Initializing PORTA
Figure 9-2: Block Diagram of RA3:RA0 and RA5 Pins
WR PORT
WR TRIS
RD PORT
Data bus
CLRF
CLRF
BSF
MOVLW
MOVWF
To Peripheral Module(s)
Note: I/O pin has protection diodes to V
STATUS
PORTA
STATUS, RP0
0xCF
TRISA
Data Latch
TRIS Latch
D
CK
D
CK
RD TRIS
Q
Q
Q
Q
; Bank0
; Initialize PORTA by clearing output
;
; Select Bank1
; Value used to initialize data direction
; PORTA<3:0> = inputs PORTA<5:4> = outputs
;
data latches
TRISA<7:6> always read as '0'
DD
and V
Q
SS
EN
.
D
V
V
P
N
DD
SS
Analog
input
mode
1997 Microchip Technology Inc.
TTL
or ST
input
buffer
I/O pin
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