Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SSOP 20 8-Bit 20 MHz I/O number 16

PIC16F627A/628A/648A

TABLE 4-4: SPECIAL FUNCTION REGISTERS SUMMARY BANK1

Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Value on

POR

Reset

(1)

Details

on Page

Bank 1

80h INDF Addressing this location uses contents of FSR to address data memory (not a physical

xxxx xxxx 30

81h OPTION RBPU

INTEDG T0CS T0SE PSA PS2 PS1 PS0 1111 1111 25

82h PCL Program Counter’s (PC) Least Significant Byte 0000 0000 30

83h STATUS IRP RP1 RP0 TO

PD ZDCC0001 1xxx 24

84h FSR Indirect Data Memory Address Pointer xxxx xxxx 30

85h TRISA TRISA7 TRISA6 TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 1111 1111 33

86h TRISB TRISB7 TRISB6 TRISB5 TRISB4 TRISB3 TRISB2 TRISB1 TRISB0 1111 1111 38

87h — Unimplemented — —

88h — Unimplemented — —

89h — Unimplemented — —

8Ah PCLATH

— — — Write Buffer for upper 5 bits of Program Counter ---0 0000 30

8Bh INTCON GIE PEIE T0IE INTE RBIE T0IF INTF RBIF 0000 000x 26

8Ch PIE1 EEIE CMIE RCIE TXIE

— CCP1IE TMR2IE TMR1IE 0000 -000 27

8Dh — Unimplemented — —

8Eh PCON

— — — — OSCF —PORBOR ---- 1-0x 29

8Fh — Unimplemented — —

90h — Unimplemented — —

91h — Unimplemented — —

92h PR2 Timer2 Period Register 1111 1111 54

93h — Unimplemented — —

94h — Unimplemented — —

95h — Unimplemented — —

96h — Unimplemented — —

97h — Unimplemented — —

98h TXSTA CSRC TX9 TXEN SYNC

— BRGH TRMT TX9D 0000 -010 73

99h SPBRG Baud Rate Generator Register 0000 0000 75

9Ah EEDATA EEPROM Data Register xxxx xxxx 91

9Bh EEADR EEPROM Address Register xxxx xxxx 92

9Ch EECON1

— — — — WRERR WREN WR RD ---- x000 92

9Dh EECON2 EEPROM Control Register 2 (not a physical register) ---- ---- 92

9Eh — Unimplemented — —

9Fh VRCON VREN VROE VRR

— VR3 VR2 VR1 VR0 000- 0000 69

Legend: - = Unimplemented locations read as ‘0’, u = unchanged, x = unknown, q = value depends on condition, shaded = unimplemented

Note 1: For the initialization condition for registers tables, refer to Table 14-6 and Table 14-7.