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M58LW064 Datasheet(PDF) 16 Page - STMicroelectronics

Part # M58LW064
Description  64 Mbit x16 and x16/x32, Block Erase Low Voltage Flash Memories
PDF  53 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M58LW064 Datasheet(HTML) 16 Page - STMicroelectronics

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Table 10. Burst Configuration Register (1)
Note: 1. The BCR defines both the read mode and the burst configuration.
2. Synchronous burst length is defined as Word or Double-Word, the data bus width depends only on the WORD input.
Asynchronous Page read is two Words or one Double-Word.
3. A burst length of 8 is not available for x32 organisation.
4. At FK > 50MHz when X-Latency = 10 or 12, Y-Latency = 2 independent of the value of M9.
At FK = 66MHz when X-Lantency = 14 or 16, Y-Latency = 2 indepedent of the value of M9.
5. Latency 7 valid only for continuous burst. Otherwisw Latency = 8.
6. Latency 10 valid only for continuous burst. Otherwisw Latency = 12.
7. Latency 11 valid only for continuous burst. Otherwisw Latency = 12.
8. Latency 14 valid only for continuous burst. Otherwisw Latency = 16.
BCR mode bit
Description
Value
Description
M15
Read Select
0
Synchronous Burst Read
1
Asynchronous Read
M14-M11
X-Latency (4)
0001
Reserved
0010
7, only for FK = 33MHz
(5)
0011
8, only for FK = 33MHz
0100
9, only for FK = 33MHz
0101
10, only for FK = 50MHz
(6)
0110
11, only for FK = 50MHz
(7)
1001
12, only for FK = 50MHz
1010
13, only for FK = 50MHz
1011
14, only for FK = 66MHz
(8)
1101
16, only for FK = 66MHz
M9
Y-Latency (4)
0
One Burst Clock cycle
1
Two Burst Clock cycles
M8
Valid Data Ready
0
R valid Low during valid Burst Clock edge
1
R valid Low one data cycle before valid Burst Clock edge
M7
Burst Type
0
Interleaved
1
Sequential
M6
Valid Clock Edge
0
Falling Burst Clock edge
1
Rising Burst Clock edge
M3
Asynchronous
0
Random Read
1
Latch Enable Controlled Read
M2-M0
Burst Length (2)
100
1 Word or Double-Word
101
2 Words or Double-Words
001
4 Words or Double-Words
010
8 Words or Double-Words (3)
111
Continuous



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