PIC16F628A-I/P Microchip Technology Inc., PIC16F628A-I/P Datasheet - Page 100

• Manufacturer Part Number: PIC16F628A-I/P
• Description: 18 PIN, 3.5 KB FLASH, 224 RAM, 16 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F628A-I/P

• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 128 Bytes
• Input Output: 16
• Interface: USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 18-pin PDIP
• Programmable Memory: 3.5K Bytes
• Ram Size: 224 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

PIC16F62X
TABLE 14-7:
TABLE 14-8:
DS40300C-page 98
Power-on Reset
MCLR Reset during normal operation
MCLR Reset during SLEEP
WDT Reset
WDT Wake-up
Brown-out Detect Reset
Interrupt Wake-up from SLEEP
Legend: u = unchanged, x = unknown, - = unimplemented bit, reads as ‘0’.
Note 1: When the wake-up is due to an interrupt and global enable bit, GIE is set, the PC is loaded with the interrupt vector
W
INDF
TMR0
PCL
STATUS
FSR
PORTA
PORTB
T1CON
T2CON
CCP1CON
RCSTA
CMCON
PCLATH
INTCON
PIR1
OPTION
TRISA
TRISB
PIE1
PCON
TXSTA
EECON1
VRCON
Legend:
Note
Register
1: If V
2: One or more bits in INTCON, PIR1 and/or PIR2 will be affected (to cause wake-up).
3: When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector (0004h).
4: See Table 14-7 for RESET value for specific condition.
5: If wake-up was due to comparator input changing, then Bit 6 = 1. All other interrupts generating a wake-up will cause Bit 6 = u.
6: If RESET was due to brown-out, then Bit 0 = 0. All other RESETS will cause Bit 0 = u.
u = unchanged, x = unknown, - = unimplemented bit, reads as ‘0’, q = value depends on condition.
(0004h) after execution of PC+1.
DD
Address
goes too low, Power-on Reset will be activated and registers will be affected differently.
Condition
INITIALIZATION CONDITION FOR SPECIAL REGISTERS
INITIALIZATION CONDITION FOR REGISTERS
0Ah
0Bh
0Ch
8Ch
8Eh
9Ch
00h
01h
02h
03h
04h
05h
06h
10h
12h
17h
18h
1Fh
81h
85h
86h
98h
9Fh
—
xxxx xxxx
xxxx xxxx
0000 0000
0001 1xxx
xxxx xxxx
xxxx 0000
xxxx xxxx
--00 0000
-000 0000
--00 0000
0000 -00x
0000 0000
---0 0000
0000 000x
0000 -000
1111 1111
11-1 1111
1111 1111
0000 -000
---- 1-0x
0000 -010
---- x000
000- 0000
Power-on
Reset
—
• MCLR Reset during normal
• MCLR Reset during SLEEP
• WDT Reset
• Brown-out Detect Reset
operation
Preliminary
Program
PC + 1
Counter
PC + 1
000h
000h
000h
000h
000h
---- 1-uq
000q quuu
uuuu uuuu
uuuu uuuu
0000 0000
uuuu uuuu
xxxx u000
uuuu uuuu
--uu uuuu
-000 0000
--00 0000
0000 -00x
0000 0000
---0 0000
0000 000u
0000 -000
1111 1111
11-- 1111
1111 1111
0000 -000
0000 -010
---- q000
000- 0000
(1)
—
(1,6)
(4)
(1)
0001 1xxx
000u uuuu
0001 0uuu
0000 uuuu
uuu0 0uuu
000x xuuu
uuu1 0uuu
Register
STATUS
• Wake-up from SLEEP through
• Wake-up from SLEEP through
interrupt
WDT timeout
 2003 Microchip Technology Inc.
-q-- ----
uuuq quuu
uuuu uqqq
uuuu uuuu
uuuu uuuu
uuuu uuuu
xxxx 0000
uuuu uuuu
--uu uuuu
-uuu uuuu
--uu uuuu
uuuu -uuu
uu-- uuuu
---u uuuu
uuuu uuuu
uu-u uuuu
uuuu uuuu
uuuu -uuu
---- --uu
uuuu -uuu
---- uuuu
uuu- uuuu
PC + 1
—
---- 1-0x
---- 1-uu
---- 1-uu
---- 1-uu
---- u-uu
---- 1-u0
---- u-uu
Register
(3)
PCON
(2,5)
(4)
(2)