参数资料
型号: MBM29DL32TF70TN
厂商: FUJITSU LTD
元件分类: PROM
英文描述: 2M X 16 FLASH 3V PROM, 70 ns, PDSO48
封装: PLASTIC, TSOP1-48
文件页数: 18/70页
文件大小: 862K
代理商: MBM29DL32TF70TN
MBM29DL32TF/BF-70
25
s FUNCTIONAL DESCRIPTION
1.
Simultaneous Operation
The device features functions that enable reading of data from one memory bank while a program or erase
operation is in progress in the other memory bank (simultaneous operation) , in addition to conventional features
(read, program, erase, erase-suspend read, and erase-suspend program) . The bank can be selected by bank
address (A20, A19, A18) with zero latency. The device consists of the following four banks :
Bank A : 8
× 8 KB and 7 × 64 KB; Bank B : 24 × 64 KB; Bank C : 24 × 64 KB; Bank D : 8 × 64 KB.
The device can execute simultaneous operations between Bank 1, a bank chosen from among the four banks,
and Bank 2, a bank consisting of the three remaining banks. (See “FlexBankTM Architecture Table”.) This is what
we call a “FlexBank”, for example, the rest of banks B, C and D to let the system read while Bank A is in the
process of program (or erase) operation. However, the different types of operations for the three banks are
impossible, e.g. Bank A writing, Bank B erasing, and Bank C reading out. With this “FlexBank”, as described in
“Example of Virtual Banks Combination Table”, the system gets to select from four combinations of data volume
for Bank 1 and Bank 2, which works well to meet the system requirement. The simultaneous operation cannot
execute multi-function mode in the same bank. “Simultaneous Operation Table” shows the possible combinations
for simultaneous operation.Refer to “8. Bank-to-Bank Read/Write Timing Diagram” in sTIMING DIAGRAM.
FlexBankTM Architecture Table
Example of Virtual Banks Combination Table
Note : When multiple sector erase over several banks is operated, the system cannot read out of the bank to which
a sector being erased belongs. For example, suppose that erasing is taking place at both Bank A and Bank B,
neither Bank A nor Bank B is read out (they would output the sequence flag once they were selected.)
Meanwhile the system would get to read from either Bank C or Bank D.
Bank
Splits
Bank 1
Bank 2
Volume
Combination
Volume
Combination
1
4 Mbit
Bank A
28 Mbit
Bank B, C, D
2
12 Mbit
Bank B
20 Mbit
Bank A, C, D
3
12 Mbit
Bank C
20 Mbit
Bank A, B, D
4
4 Mbit
Bank D
28 Mbit
Bank A, B, C
Bank
Splits
Bank 1
Bank 2
Volume Combination
Sector Size
Volume Combination
Sector Size
14 Mbit
Bank A
8
× 8 Kbyte/4 Kword
+
7
× 64 Kbyte/32 Kword
28 Mbit
Bank B
+
Bank C
+
Bank D
56
× 64 Kbyte/32 Kword
28 Mbit
Bank A
+
Bank D
8
× 8 Kbyte/4 Kword
+
15
× 64 Kbyte/32 Kword
24 Mbit
Bank B
+
Bank C
48
× 64 Kbyte/32 Kword
316 Mbit
Bank A
+
Bank B
8
× 8 Kbyte/4 Kword
+
31
× 64 Kbyte/32 Kword
16 Mbit
Bank C
+
Bank D
32
× 64 Kbyte/32 Kword
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