Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller PLCC 68 (24.23x24.23) 8-Bit 4 MHz I/O number 25

PIC16C9XX

DS30444E - page 20  1997 Microchip Technology Inc.

Bank 1

80h INDF Addressing this location uses contents of FSR to address data memory (not a physical register) 0000 0000 0000 0000

81h OPTION RBPU

INTEDG T0CS T0SE PSA PS2 PS1 PS0 1111 1111 1111 1111

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

83h STATUS IRP RP1 RP0 T

O PD Z DC C 0001 1xxx 000q quuu

84h FSR Indirect data memory address pointer xxxx xxxx uuuu uuuu

85h TRISA

— — PORTA Data Direction Register --11 1111 --11 1111

86h TRISB PORTB Data Direction Register 1111 1111 1111 1111

87h TRISC

— — PORTC Data Direction Register --11 1111 --11 1111

88h TRISD PORTD Data Direction Register 1111 1111 1111 1111

89h TRISE PORTE Data Direction Register 1111 1111 1111 1111

8Ah PCLATH

— — — Write Buffer for the upper 5 bits of the PC ---0 0000 ---0 0000

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

8Ch PIE1 LCDIE ADIE

(2)

— — SSPIE CCP1IE TMR2IE TMR1IE 00-- 0000 00-- 0000

8Dh — Unimplemented — —

8Eh PCON

— — — — — — POR — ---- --0- ---- --u-

8Fh — Unimplemented — —

90h — Unimplemented — —

91h — Unimplemented — —

92h PR2 Timer2 Period Register 1111 1111 1111 1111

93h SSPADD Synchronous Serial Port (I

C mode) Address Register 0000 0000 0000 0000

94h SSPSTAT SMP CKE D/A

P S R/W UA BF 0000 0000 0000 0000

95h — Unimplemented — —

96h — Unimplemented — —

97h — Unimplemented — —

98h — Unimplemented — —

99h — Unimplemented — —

9Ah — Unimplemented — —

9Bh — Unimplemented — —

9Ch — Unimplemented — —

9Dh — Unimplemented — —

9Eh — Unimplemented — —

9Fh

(1)

ADCON1 — — — — — PCFG2 PCFG1 PCFG0 ---- -000 ---- -000

TABLE 4-1: SPECIAL FUNCTION REGISTER SUMMARY (Cont.’d)

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

Value on

Power-on

Reset

Value on all

other resets

Legend: x = unknown, u = unchanged, q = value depends on condition, - = unimplemented read as '0',

shaded locations are unimplemented, read as ‘0’.

Note 1: Registers ADRES, ADCON0, and ADCON1 are not implemented in the PIC16C923, read as '0'.

2: These bits are reserved on the PIC16C923, always maintain these bits clear.

3: These pixels do not display, but can be used as general purpose RAM.

4: PIC16C923 reset values for PORTA: --xx xxxx for a POR, and --uu uuuu for all other resets,

PIC16C924 reset values for PORTA: --0x 0000 when read.

5: Bit1 of ADCON0 is reserved on the PIC16C924, always maintain this bit clear.