S25FL016A View Datasheet(PDF) - Spansion Inc.
Part Name
Description
Manufacturer
S25FL016A
Spansion Inc.
S25FL016A Datasheet PDF : 36 Pages
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Data Sheet
9.12.1
Release from Deep Power Down and Read Electronic Signature (RES)
The device features an 8-bit Electronic Signature, which can be read using the RES command. See
Figure 9.13 and Table 9.4 on page 25 for the command sequence and signature value. The Electronic
Signature is not to be confused with the identification data obtained using the RDID command. The device
offers the Electronic Signature so that it can be used with previous devices that offered it; however, the
Electronic Signature should not be used for new designs, which should read the RDID data instead.
After the host system drives CS# low, it must write the RES command followed by 3 dummy bytes to SI (each
bit is latched on SI during the rising edge of SCK). The Electronic Signature is then output on SO; each bit is
shifted out on the falling edge of SCK. The RES operation is terminated by driving CS# high after the
Electronic Signature is read at least once. Additional clock cycles on SCK with CS# low cause the device to
output the Electronic Signature repeatedly.
When CS# is driven high, the device transitions from DP mode to the standby mode after a delay of tRES, as
previously described. The RES command always provides access to the Electronic Signature of the device
and can be applied even if DP mode has not been entered.
Any RES command issued while an erase, program, or WRSR operation is in progress not executed, and the
operation continues uninterrupted.
Figure 9.13 Release from Deep Power Down and Read Electronic Signature (RES) Command Sequence
CS#
SCK
SI
Hi-Z
SO
0 1 2 3 4 5 6 7 8 9 10 28 29 30 31 32 33 34 35 36 37 38
Command
3 Dummy Bytes
tRES
23 22 21
MSB
32 1 0
7 654 32 10
MSB
Electronic ID out
Deep Power-down Mode
Standby Mode
Table 9.4 Command Definitions
Operation Command
Description
One-Byte
Command Code
Address
Bytes
Dummy
Byte
Data Bytes
READ
Read Data Bytes
03H (0000 0011)
3
0
1 to ∞
Read
FAST_READ Read Data Bytes at Higher Speed
0BH (0000 1011)
3
1
1 to ∞
RDID
Read Identification (Note 1)
9FH (1001 1111)
0
0
1 to 3
Write Control
WREN
WRDI
Write Enable
Write Disable
06H (0000 0110)
0
0
0
04H (0000 0100)
0
0
0
Erase
SE
Sector Erase
BE
Bulk (Chip) Erase
D8H (1101 1000)
3
0
0
C7H (1100 0111)
0
0
0
Program
PP
Page Program
02H (0000 0010)
3
0
1 to 256
Status
Register
RDSR
WRSR
Read from Status Register
Write to Status Register
05H (0000 0101)
0
0
01H (0000 0001)
0
0
1 to ∞
1
DP
Deep Power Down
B9H (1011 1001)
0
0
0
Power Saving
Release from Deep Power Down
ABH (1010 1011)
0
0
RES
Release from Deep Power Down and
Read Electronic Signature (Note 2)
ABH (1010 1011)
0
3
0
1 to ∞
Notes
1. The S25FL016A has a manufacturer ID of 01h, and a device ID consisting of the memory type (02h) and the memory capacity (14h).
2. The S25FL016A has an Electronic Signature ID of 14h.
January 7, 2008 S25FL016A_00_C3
S25FL016A
25
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