PIC16F874A-I/PT Microchip Technology, PIC16F874A-I/PT Datasheet - Page 79

• Manufacturer Part Number: PIC16F874A-I/PT
• Description: IC MCU FLASH 4K 20MHZ 44-TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

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

Table 4-1:
V
V
V
VLCDADJ
V
V
V
VREG
V
V
WR
Legend: TTL = TTL-compatible input
1997 Microchip Technology Inc.
LCD
LCD
LCD
REF
REF
REF
SS
DD
Pin Name
1
2
3
+
-
ST = Schmitt Trigger input with CMOS levels
SM = SMBus compatible input. An external resistor is required if this pin is used as an output
NPU = N-channel pull-up
No-P diode = No P-diode to V
I = input
P = Power
I/O Descriptions (Cont.’d)
Type
Pin
O
P
P
P
P
P
I
I
I
I
I
Analog
Analog
Analog
Analog
Buffer
Type
TTL
—
—
—
—
—
—
DD
Description
LCD Voltage
LCD Voltage
LCD Voltage
LCD Voltage Generation
Analog High Voltage Reference input.
DR reference voltage output on devices with comparators.
Analog High Voltage Reference input.
Usually multiplexed onto an analog pin.
Analog Low Voltage Reference input.
Usually multiplexed onto an analog pin.
This pin is an output to control the gate of an external N-FET
for voltage regulation.
Ground reference for logic and I/O pins.
Positive supply for logic and I/O pins.
Write control for parallel slave port (See CS and RD pins also).
Section 4. Architecture
CMOS = CMOS compatible input or output
PU = Weak internal pull-up
AN = Analog input or output
O = output
L = LCD Driver
DS31004A-page 4-11
4