PIC16F946 Datasheet, PDF (166/274 Pages) Microchip Technology – 64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology

PIC16F946
FIGURE 13-1:
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,EEADRL
PPCC++33
PC + 4
PC + 5
INSTR (PC)
INSTR (PC + 1) EEDATH,EEDATL 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
EEDATL
register
EERHLT
TABLE 13-1: REGISTERS/BITS ASSOCIATED WITH DATA EEPROM
Addr
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR, BOR
Value on
all other
Resets
0Bh/8Bh/ INTCON
GIE
PEIE
T0IE
INTE
RBIE
T0IF
INTF
RBIF 0000 000x
10Bh
0Ch
PIR1
EEIF
ADIF
RCIF
TXIF
SSPIF CCP1IF TMR2IF TMR1IF 0000 0000
8Ch
PIE1
EEIE
ADIE
RCIE
TXIE
SSPIE CCP1IE TMR2IE TMR1IE 0000 0000
10Ch EEDATL EEDATL7 EEDATL6 EEDATL5 EEDATL4 EEDATL3 EEDATL2 EEDATL1 EEDATL0 0000 0000
10Dh EEADRL EEADRL7 EEADRL6 EEADRL5 EEADRL4 EEADRL3 EEADRL2 EEADRL1 EEADRL0 0000 0000
10Eh EEDATH
—
—
EEDATH5 EEDATH4 EEDATH3 EEDATH2 EEDATH1 EEDATH0 _{--00 0000}
10Fh EEADRH
—
—
— EEADRH4 EEADRH3 EEADRH2 EEADRH1 EEADRH0 ---0 0000
18Ch EECON1 EEPGD
—
—
—
WRERR WREN
WR
RD
0--- x000
18Dh EECON2 EEPROM Control Register 2 (not a physical register)
---- ----
Legend:
x = unknown, u = unchanged, – = unimplemented read as ‘0’, q = value depends upon condition.
Shaded cells are not used by data EEPROM module.
0000 000x
0000 0000
0000 0000
0000 0000
0000 0000
--00 0000
---0 0000
---- q000
---- ----
DS41265A-page 164
Preliminary
© 2005 Microchip Technology Inc.