PIC16F874A-I/P Microchip Technology, PIC16F874A-I/P Datasheet - Page 52

• Manufacturer Part Number: PIC16F874A-I/P
• Description: IC MCU FLASH 4KX14 EE 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F874A-I/P

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 20MHz
• 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
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 192Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• 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: Through Hole
• 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: 10 bit, 8 Channel
• Data Rom Size: 128 B
• Height: 3.81 mm
• Length: 52.26 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4 V
• Width: 13.84 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 444-1001 - DEMO BOARD FOR PICMICRO MCU
• Lead Free Status / Rohs Status: Details
• Other names: PIC16F874AI/P

PIC16F87XA
TABLE 4-10:
REGISTER 4-1:
DS39582B-page 50
09h
89h
9Fh
Legend:
Address
PORTE
TRISE
ADCON1
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used by PORTE.
Name
SUMMARY OF REGISTERS ASSOCIATED WITH PORTE
ADFM
Bit 7
TRISE REGISTER (ADDRESS 89h)
IBF
Parallel Slave Port Status/Control Bits:
IBF: Input Buffer Full Status bit
1 = A word has been received and is waiting to be read by the CPU
0 = No word has been received
1 = The output buffer still holds a previously written word
0 = The output buffer has been read
1 = A write occurred when a previously input word has not been read (must be cleared in
0 = No overflow occurred
PSPMODE: Parallel Slave Port Mode Select bit
1 = PORTD functions in Parallel Slave Port mode
0 = PORTD functions in general purpose I/O mode
Unimplemented: Read as ‘0’
PORTE Data Direction Bits:
Bit 2: Direction Control bit for pin RE2/CS/AN7
1 = Input
0 = Output
Bit 1: Direction Control bit for pin RE1/WR/AN6
1 = Input
0 = Output
Bit 0: Direction Control bit for pin RE0/RD/AN5
1 = Input
0 = Output
bit 7
Legend:
R = Readable bit
- n = Value at POR
—
OBF: Output Buffer Full Status bit
IBOV: Input Buffer Overflow Detect bit (in Microprocessor mode)
R-0
IBF
software)
ADCS2
Bit 6
OBF
—
OBF
R-0
IBOV
Bit 5
—
—
PSPMODE
Bit 4
R/W-0
IBOV
—
—
W = Writable bit
‘1’ = Bit is set
PCFG3
Bit 3
PSPMODE
—
—
R/W-0
PORTE Data Direction bits
PCFG2
Bit 2
RE2
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
PCFG1
U-0
—
Bit 1
RE1
PCFG0 00-- 0000 00-- 0000
Bit 0
R/W-1
RE0
Bit 2
 2003 Microchip Technology Inc.
---- -xxx ---- -uuu
0000 -111 0000 -111
POR, BOR
Value on:
x = Bit is unknown
R/W-1
Bit 1
Value on
all other
Resets
R/W-1
Bit 0
bit 0