M93C86, M93C76, M93C66, M93C56, M93C46
Table 6. Instruction Set for the M93C56 and M93C66
x8 Origination (ORG = 0)
x16 Origination (ORG = 1)
Required
Instruc
tion
Start
bit
Op-
Code
Required
Clock
Description
1,2
1,3
Data
Data
Clock
Address
Address
Cycles
Cycles
Read Data from
Memory
READ
1
1
1
10
01
00
A8-A0
A8-A0
Q7-Q0
D7-D0
A7-A0
A7-A0
Q15-Q0
D15-D0
Write Data to
Memory
WRITE
20
12
27
11
1 1XXX
XXXX
11XX
XXXX
EWEN Erase/Write Enable
0 0XXX
XXXX
00XX
XXXX
EWDS Erase/Write Disable
ERASE Erase Byte or Word
1
1
1
00
11
00
12
12
12
11
11
11
A8-A0
A7-A0
1 0XXX
XXXX
10XX
XXXX
ERAL
Erase All Memory
Write All Memory
with same Data
0 1XXX
XXXX
01XX
XXXX
WRAL
1
00
D7-D0
20
D15-D0
27
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
x8 Origination (ORG = 0)
x16 Origination (ORG = 1)
Required
Instruc
tion
Start
bit
Op-
Code
Required
Clock
Description
1,2
1,3
Data
Data
Clock
Address
Address
Cycles
Cycles
Read Data from
Memory
READ
1
1
1
10
01
00
A10-A0
A10-A0
Q7-Q0
D7-D0
A9-A0
A9-A0
Q15-Q0
D15-D0
Write Data to
Memory
WRITE
22
14
29
13
11X XXXX
XXXX
11 XXXX
XXXX
EWEN Erase/Write Enable
00X XXXX
XXXX
00 XXXX
XXXX
EWDS Erase/Write Disable
ERASE Erase Byte or Word
1
1
1
00
11
00
14
14
14
13
13
13
A10-A0
A9-A0
10X XXXX
XXXX
10 XXXX
XXXX
ERAL
Erase All Memory
Write All Memory
with same Data
01X XXXX
XXXX
01 XXXX
XXXX
WRAL
1
00
D7-D0
22
D15-D0
29
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.
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