PIC16F688-I/ST View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F688-I/ST

14-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

Microchip Technology 

PIC16F688

FIGURE 9-1:

FLASH PROGRAM MEMORY READ CYCLE EXECUTION

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

Flash ADDR

Flash Data

PC

PC + 1

EEADRH,EEADR

PPCC++33

PC + 4

PC + 5

INSTR (PC)

INSTR (PC + 1) EEDATH,EEDAT INSTR (PC + 3) INSTR (PC + 4)

INSTR(PC - 1)

executed here

BSF EECON1,RD

executed here

INSTR(PC + 1)

executed here

Forced NOP

executed here

INSTR(PC + 3)

executed here

INSTR(PC + 4)

executed here

RD bit

EEDATH

EEDAT

Register

EERHLT

TABLE 9-1: SUMMARY OF REGISTERS ASSOCIATED WITH DATA EEPROM

Name

EECON1

EECON2

EEADR

EEADRH

EEDAT

EEDATH

INTCON

PIE1

PIR1

Legend:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Value on

POR, BOR

EEPGD

—

—

—

WRERR

WREN

WR

RD

x--- x000

EEPROM Control Register 2 (not a physical register)

---- ----

EEADR7 EEADR6 EEADR5 EEADR4 EEADR3 EEADR2 EEADR1 EEADR0 0000 0000

—

—

—

—

EEADRH3 EEADRH2 EEADRH1 EEADRH0 ---- 0000

EEDAT7 EEDAT6 EEDAT5 EEDAT4 EEDAT3 EEDAT2 EEDAT1 EEDAT0 0000 0000

—

—

EEDATH5 EEDATH4 EEDATH3 EEDATH2 EEDATH1 EEDATH0 --00 0000

GIE

PEIE

T0IE

INTE

RABIE

T0IF

INTF

RABIF 0000 000x

EEIE ADIE RCIE

C2IE

C1IE

OSFIE

TXIE TMR1IE 0000 0000

EEIF ADIF RCIF

C2IF

C1IF

OSFIF

TXIF TMR1IF 0000 0000

x = unknown, u = unchanged, — = unimplemented read as ‘0’, q = value depends upon condition.

Shaded cells are not used by data EEPROM module.

Value on

all other

Resets

0--- q000

---- ----

0000 0000

---- 0000

0000 0000

--00 0000

0000 000x

0000 0000

0000 0000

DS41203D-page 82

© 2007 Microchip Technology Inc.

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