PIC18F2439-E/SP Microchip Technology, PIC18F2439-E/SP Datasheet - Page 96

• Manufacturer Part Number: PIC18F2439-E/SP
• Description: IC PIC MCU FLASH 6KX16 28DIP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2439-E/SP

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 21
• Program Memory Size: 12KB (6K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 640 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18FXX39
REGISTER 9-1:
DS30485A-page 94
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
TRISE REGISTER
bit 7
IBF: Input Buffer Full Status bit
1 = A word has been received and waiting to be read by the CPU
0 = No word has been received
OBF: Output Buffer Full Status bit
1 = The output buffer still holds a previously written word
0 = The output buffer has been read
IBOV: Input Buffer Overflow Detect bit (in Microprocessor mode)
1 = A write occurred when a previously input word has not been read
0 = No overflow occurred
PSPMODE: Parallel Slave Port Mode Select bit
1 = Parallel Slave Port mode
0 = General Purpose I/O mode
Unimplemented: Read as '0'
TRISE2: RE2 Direction Control bit
1 = Input
0 = Output
TRISE1: RE1 Direction Control bit
1 = Input
0 = Output
TRISE0: RE0 Direction Control bit
1 = Input
0 = Output
Legend:
R = Readable bit
- n = Value at POR
R-0
IBF
(must be cleared in software)
OBF
R-0
R/W-0
IBOV
Preliminary
W = Writable bit
‘1’ = Bit is set
PSPMODE
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
U-0
—
TRISE2
R/W-1
 2002 Microchip Technology Inc.
x = Bit is unknown
TRISE1
R/W-1
TRISE0
R/W-1
bit 0