PIC16F870-I/SP Microchip Technology Inc., PIC16F870-I/SP Datasheet - Page 43

• Manufacturer Part Number: PIC16F870-I/SP
• Description: 28 PIN, 7 KB FLASH, 128 RAM, 22 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F870-I/SP

• A/d Inputs: 5-Channel, 10-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 64 Bytes
• Input Output: 22
• Interface: USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 3.5K Bytes
• Ram Size: 128 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

TABLE 4-9:
TABLE 4-10:
 2003 Microchip Technology Inc.
09h
89h
9Fh
Legend:
RE0/RD/AN5
RE1/WR/AN6
RE2/CS/AN7
Legend:
Note 1:
Addr
Name
PORTE
TRISE
ADCON1
Name
x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used by PORTE.
ST = Schmitt Trigger input, TTL = TTL input
Input buffers are Schmitt Triggers when in I/O mode and TTL buffers when in Parallel Slave Port mode.
PORTE FUNCTIONS
SUMMARY OF REGISTERS ASSOCIATED WITH PORTE
ADFM
Bit 7
IBF
—
Bit#
bit0
bit1
bit2
Bit 6
OBF
—
—
Buffer Type
ST/TTL
ST/TTL
ST/TTL
IBOV
Bit 5
—
—
(1)
(1)
(1)
PSPMODE
Bit 4
—
—
Input/output port pin or read control input in Parallel Slave Port mode or
analog input:
RD
1 = Not a read operation
0 = Read operation. Reads PORTD register (if chip selected.)
Input/output port pin or write control input in Parallel Slave Port mode
or analog input:
WR
1 = Not a write operation
0 = Write operation. Writes PORTD register (if chip selected).
Input/output port pin or chip select control input in Parallel Slave Port
mode or analog input:
CS
1 = Device is not selected
0 = Device is selected
PCFG3
Bit 3
—
—
PORTE Data Direction Bits
PCFG2
Bit 2
RE2
PCFG1
Bit 1
RE1
Function
PIC16F870/871
PCFG0
Bit 0
RE0
---- -xxx
0000 -111
--0- 0000
POR, BOR
Value on:
DS30569B-page 41
---- -uuu
0000 -111
--0- 0000
Value on
RESETS
all other