Datasheet

M93C86, M93C76, M93C66, M93C56, M93C46
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Table 6. Instruction Set for the M93C56 and M93C66
Note: 1. X = Don't Care bit.
2. Address bit A8 is not decoded by the M93C56.
3. Address bit A7 is not decoded by the M93C56.
Table 7. Instruction Set for the M93C76 and M93C86
Note: 1. X = Don't Care bit.
2. Address bit A10 is not decoded by the M93C76.
3. Address bit A9 is not decoded by the M93C76.
Instruction Description
Start
bit
Op-
Code
x8 Origination (ORG = 0) x16 Origination (ORG = 1)
Address
(1,2)
Data
Required
Clock
Cycles
Address
(1,3)
Data
Required
Clock
Cycles
READ
Read Data from
Memory
1 10 A8-A0 Q7-Q0 A7-A0 Q15-Q0
WRITE
Write Data to
Memory
1 01 A8-A0 D7-D0 20 A7-A0 D15-D0 27
EWEN Erase/Write Enable 1 00
1 1XXX
XXXX
12 11XX XXXX 11
EWDS Erase/Write Disable 1 00
0 0XXX
XXXX
12 00XX XXXX 11
ERASE Erase Byte or Word 1 11 A8-A0 12 A7-A0 11
ERAL Erase All Memory 1 00
1 0XXX
XXXX
12 10XX XXXX 11
WRAL
Write All Memory
with same Data
100
0 1XXX
XXXX
D7-D0 20 01XX XXXX D15-D0 27
Instruction Description
Start
bit
Op-
Code
x8 Origination (ORG = 0) x16 Origination (ORG = 1)
Address
(1,2)
Data
Required
Clock
Cycles
Address
(1,3)
Data
Required
Clock
Cycles
READ
Read Data from
Memory
1 10 A10-A0 Q7-Q0 A9-A0 Q15-Q0
WRITE
Write Data to
Memory
1 01 A10-A0 D7-D0 22 A9-A0 D15-D0 29
EWEN Erase/Write Enable 1 00
11X XXXX
XXXX
14
11 XXXX
XXXX
13
EWDS Erase/Write Disable 1 00
00X XXXX
XXXX
14
00 XXXX
XXXX
13
ERASE Erase Byte or Word 1 11 A10-A0 14 A9-A0 13
ERAL Erase All Memory 1 00
10X XXXX
XXXX
14
10 XXXX
XXXX
13
WRAL
Write All Memory
with same Data
100
01X XXXX
XXXX
D7-D0 22
01 XXXX
XXXX
D15-D0 29