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S34ML01G1 Datasheet(数据表) 29 Page - Cypress Semiconductor

部件型号  S34ML01G1
说明  1 Gb/2 Gb/4 Gb, 3 V, SLC NAND Flash for Embedded
下载  71 Pages
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制造商  CYPRESS [Cypress Semiconductor]
网页  http://www.cypress.com
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S34ML01G1 Datasheet(HTML) 29 Page - Cypress Semiconductor

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Document Number: 002-00676 Rev. *V
Page 29 of 71
S34ML01G1
S34ML02G1
S34ML04G1
3.17
Read ID2
The device contains an alternate identification mode, initiated by writing 30h-65h-00h to the command register, followed by address
inputs, followed by command 30h. The address for S34ML01G1 will be
00h-02h-02h-00h. The address for S34ML02G1 and S34ML04G1 will be 00h-02h-02h-00h-00h. The ID2 data can then be read from
the device by pulsing RE#. The command register remains in Read ID2 mode until further commands are issued to it. Figure 42
on page 53 shows the Read ID2 command sequence. Read ID2 values are all 0xFs, unless specific values are requested when
ordering from Cypress.
3.18
Read ONFI Signature
To retrieve the ONFI signature, the command 90h together with an address of 20h shall be entered (i.e. it is not valid to enter an
address of 00h and read 36 bytes to get the ONFI signature). The ONFI signature is the ASCII encoding of 'ONFI' where 'O' = 4Fh,
'N' = 4Eh, 'F' = 46h, and 'I' = 49h. Reading beyond four bytes yields indeterminate values. Figure 43 on page 54 shows the operation
sequence.
3.19
Read Parameter Page
The device supports the ONFI Read Parameter Page operation, initiated by writing ECh to the command register, followed by an
address input of 00h. The host may monitor the R/B# pin or wait for the maximum data transfer time (tR) before reading the
Parameter Page data. The command register remains in Parameter Page mode until further commands are issued to it. If the Status
Register is read to determine when the data is ready, the Read Command (00h) must be issued before starting read cycles.
Figure 44 on page 54 shows the operation sequence, while Table 3.4 explains the parameter fields.
For ×16 devices, the upper eight I/Os are not used and are 0xFF.
Note: For 41nm 2Gb/4Gb Cypress NAND, for a particular condition, the Read Parameter Page command does not give the correct
values. To overcome this issue, the host must issue a Reset command before the Read Parameter Page command. Issuance of
Reset before the Read Parameter Page command will provide the correct values and will not output 00h values. This does not apply
to 48nm 1Gb.
Table 3.4 Parameter Page Description
Byte
O/M
Description
Values
Revision Information and Features Block
0-3
M
Parameter page signature
Byte 0: 4Fh, “O”
Byte 1: 4Eh, “N”
Byte 2: 46h, “F”
Byte 3: 49h, “I”
4Fh, 4Eh, 46h, 49h
4-5
M
Revision number
2-15
Reserved (0)
1
1 = supports ONFI version 1.0
0
Reserved (0)
02h, 00h
6-7
M
Features supported
5-15
Reserved (0)
4
1 = supports odd to even page Copyback
3
1 = supports interleaved operations
2
1 = supports non-sequential page programming
1
1 = supports multiple LUN operations
0
1 = supports 16-bit data bus width
S34ML01G100 (×8): 14h, 00h
S34ML02G100 (×8): 1Ch, 00h
S34ML04G100 (×8): 1Ch, 00h
S34ML01G104 (×16): 15h, 00h
S34ML02G104 (×16): 1Dh, 00h
S34ML04G104 (×16): 1Dh, 00h
8-9
M
Optional commands supported
6-15
Reserved (0)
5
1 = supports Read Unique ID
4
1 = supports Copyback
3
1 = supports Read Status Enhanced
2
1 = supports Get Features and Set Features
1
1 = supports Read Cache commands
0
1 = supports Page Cache Program command
S34ML01G1: 13h, 00h
S34ML02G1: 1Bh, 00h
S34ML04G1: 1Bh, 00h
10-31
Reserved (0)
00h
Manufacturer Information Block




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