MAX7651 데이터 시트보기 (PDF) - Maxim Integrated
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MAX7651 Datasheet PDF : 36 Pages
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Flash Programmable 12-Bit Integrated
Data-Acquisition Systems
Table 1. Data Memory Stretch Values
MD2 MD1 MD0
MEMORY CYCLES
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
2
3 (default)
4
5
6
7
8
9
READ/WRITE STROBE
WIDTH (CLOCKS)
2
4
8
12
16
20
24
28
STROBE WIDTH TIME
AT 12MHz
167ns
334ns
668ns
997ns
1330ns
1666ns
2000ns
2333ns
tMCS
0tCLCL
4tCLCL
8tCLCL
12tCLCL
16tCLCL
20tCLCL
24tCLCL
28tCLCL
Table 2. External Flash Programming Modes
MODE
Write Lower FLASH
Read Lower FLASH
Write Lock Bit 1
Write Lock Bit 2
Write Lock Bit 3
Mass Erase
Read Sig Bytes
Write Upper FLASH
Read Upper FLASH
RST
H
H
H
H
H
H
H
H
H
PSEN
L
L
L
L
L
L
L
L
L
ALE/PROG
↑↓
H
↑↓
↑↓
↑↓
↑↓
H
↑↓
H
EA/VPP
H
H
H
H
H
H
H
H
H
P2.6
L
L
H
H
H
H
L
L
L
P2.7
H
↑↓
H
H
L
L
L
H
↑↓
P3.6
H
H
H
L
H
L
L
H
H
P3.7
H
H
H
L
L
L
L
H
H
P2.5
L
L
H
H
H
H
L
H
H
Note 1: To program the lock bits, ALE must be low for duration of “Write Lockbit” cycle.
Note 2: INT0 and INT1 are open-drain and must either be driven or require a pullup (typically 10kΩ) to DVDD.
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