PIC16F874A-I/PT Microchip Technology, PIC16F874A-I/PT Datasheet - Page 144

• 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

PIC16F87XA
FIGURE 13-1:
TABLE 13-1:
DS39582B-page 142
9Dh
9Ch
Legend: x = unknown, u = unchanged, - = unimplemented, read as ‘0’.
Address
Comparator
RA2/AN2/V
CVREN
Input to
CV
CVRCON CVREN CVROE CVRR
CMCON C2OUT C1OUT C2INV C1INV
Shaded cells are not used with the comparator voltage reference.
REF
Name
REF
REGISTERS ASSOCIATED WITH COMPARATOR VOLTAGE REFERENCE
-/CV
COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
REF
Bit 7
CVROE
V
DD
Bit 6
8R
Bit 5
R
Bit 4
—
R
CVR3
16 Stages
Bit 3
CIS
16:1 Analog MUX
CVR2
CM2
Bit 2
R
CVR1
CM1
Bit 1
R
CVR0 000- 0000 000- 0000
CM0
Bit 0
 2003 Microchip Technology Inc.
0000 0111 0000 0111
8R
Value on
CVR2
CVR1
CVR3
CVR0
POR
CVRR
Value on
all other
Resets