93AA66A_05 Datasheet, PDF (5/28 Pages) Microchip Technology – 4K Microwire Compatible Serial EEPROM

93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C
FIGURE 1-1:
SYNCHRONOUS DATA TIMING
CS ^VIH
VIL
TCSS
TCKH
TCKL
VIH
CLK
TCSH
VIL
TDIS
VIH
DI
TDIH
VIL
TPD
DO ^VOH
TPD
TCZ
(Read) _VOL
TSV
DO ^VOH
(Program) _VOL
TCZ
Status Valid
Note: TSV is relative to CS.
TABLE 1-3: INSTRUCTION SET FOR X 16 ORGANIZATION (93XX66B OR 93XX66C WITH ORG = 1)
Instruction SB Opcode
Address
Data In Data Out Req. CLK Cycles
ERASE
ERAL
EWDS
EWEN
READ
WRITE
WRAL
1
11 A7 A6 A5 A4 A3 A2 A1 A0
—
(RDY/BSY)
11
1
00
10XXXXXX
—
(RDY/BSY)
11
1
00
00XXXXXX
—
High-Z
11
1
00
11XXXXXX
—
High-Z
11
1
10 A7 A6 A5 A4 A3 A2 A1 A0
—
D15 – D0
27
1
01 A7 A6 A5 A4 A3 A2 A1 A0 D15 – D0 (RDY/BSY)
27
1
00
0 1 X X X X X X D15 – D0 (RDY/BSY)
27
TABLE 1-4: INSTRUCTION SET FOR X 8 ORGANIZATION (93XX66A OR 93XX66C WITH ORG = 0)
Instruction SB Opcode
Address
Data In Data Out
Req. CLK
Cycles
ERASE
ERAL
EWDS
EWEN
READ
WRITE
WRAL
1
11 A8 A7 A6 A5 A4 A3 A2 A1 A0 —
(RDY/BSY)
12
1
00 1 0 X X X X X X X
—
(RDY/BSY)
12
1
00 0 0 X X X X X X X
—
High-Z
12
1
00 1 1 X X X X X X X
—
High-Z
12
1
10 A8 A7 A6 A5 A4 A3 A2 A1 A0 —
D7 – D0
20
1
01 A8 A7 A6 A5 A4 A3 A2 A1 A0 D7 – D0 (RDY/BSY)
20
1
00 0 1 X X X X X X X D7 – D0 (RDY/BSY)
20
© 2005 Microchip Technology Inc.
DS21795C-page 5