PIC16F870-I/SP Microchip Technology Inc., PIC16F870-I/SP Datasheet - Page 95

• 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 11-4:
TABLE 11-5:
TABLE 11-6:
 2003 Microchip Technology Inc.
Legend:
Note 1:
W
INDF
TMR0
PCL
STATUS
FSR
PORTA
PORTB
PORTC
PORTD
PORTE
PCLATH
INTCON
Legend:
Note 1:
Legend:
Power-on Reset
MCLR Reset during normal operation
MCLR Reset during SLEEP
WDT Reset
WDT Wake-up
Brown-out Reset
Interrupt wake-up from SLEEP
POR
0
0
0
1
1
1
1
1
Register
2:
3:
BOR
u = unchanged, x = unknown, - = unimplemented bit, read as '0'
When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector (0004h).
u = unchanged, x = unknown, - = unimplemented bit, read as '0', q = value depends on condition,
r = reserved, maintain clear
One or more bits in INTCON, PIR1 and/or PIR2 will be affected (to cause wake-up).
When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector
(0004h).
See Table 11-5 for RESET value for specific condition.
x = don’t care, u = unchanged
x
x
x
0
1
1
1
1
PIC16F870 PIC16F871
PIC16F870 PIC16F871
PIC16F870 PIC16F871
STATUS BITS AND THEIR SIGNIFICANCE
RESET CONDITION FOR SPECIAL REGISTERS
INITIALIZATION CONDITIONS FOR ALL REGISTERS
PIC16F870 PIC16F871
PIC16F870 PIC16F871
PIC16F870 PIC16F871
PIC16F870 PIC16F871
PIC16F870 PIC16F871
PIC16F870 PIC16F871
PIC16F870 PIC16F871
PIC16F870 PIC16F871
PIC16F870 PIC16F871
PIC16F870 PIC16F871
TO
1
0
x
1
0
0
u
1
Condition
Devices
PD
1
x
0
1
1
0
u
0
Power-on Reset
Illegal, TO is set on POR
Illegal, PD is set on POR
Brown-out Reset
WDT Reset
WDT Wake-up
MCLR Reset during normal operation
MCLR Reset during SLEEP or interrupt wake-up from SLEEP
Brown-out Reset
Power-on Reset,
xxxx xxxx
xxxx xxxx
0001 1xxx
xxxx xxxx
--0x 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
---- -xxx
---0 0000
0000 000x
0000h
N/A
Program
PC + 1
Counter
PC + 1
000h
000h
000h
000h
000h
(1)
MCLR Resets
0001 1xxx
000u uuuu
0001 0uuu
0000 1uuu
uuu0 0uuu
0001 1uuu
uuu1 0uuu
WDT Reset
uuuu uuuu
uuuu uuuu
000q quuu
uuuu uuuu
--0u 0000
uuuu uuuu
uuuu uuuu
uuuu uuuu
---- -uuu
---0 0000
0000 000u
Register
STATUS
0000h
N/A
PIC16F870/871
(3)
Wake-up via WDT or
---- --0x
---- --uu
---- --uu
---- --uu
---- --uu
---- --u0
---- --uu
Register
uuuu uuuu
uuuu uuuu
uuuq quuu
uuuu uuuu
--uu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
---- -uuu
---u uuuu
uuuu uuuu
DS30569B-page 93
PCON
Interrupt
PC + 1
N/A
(2)
(3)
(1)