A25L040O-F AMIC, A25L040O-F Datasheet - Page 24

• Manufacturer Part Number: A25L040O-F
• Description: 58T1309
• Manufacturer: AMIC

Specifications of A25L040O-F

• Memory Type: Flash
• Memory Size: 4Mbit
• Memory Configuration: 4M X 1
• Interface Type: Serial, SPI
• Clock Frequency: 100MHz
• Supply Voltage Range: 2.7V To 3.6V
• Memory Case Style: SOIC
• No. Of Pins: 8
• Rohs Compliant: Yes

Read Electronic Manufacturer ID & Device ID (REMS)
The Read Electronic Manufacturer ID & Device ID (REMS)
instruction allows the 8-bit manufacturer identification code to
be read, followed by one byte of device identification. The
manufacturer identification is assigned by JEDEC, and has
the value 37h for AMIC. The device identification is assigned
by the device manufacturer, and has the value 12h for
A25L040.
Any Read Electronic Manufacturer ID & Device ID (REMS)
instruction while an Erase, or Program cycle is in progress, is
not decoded, and has no effect on the cycle that is in
progress.
The device is first selected by driving Chip Select (
The 8-bit instruction code is follow by 2 dummy bytes and one
byte address(A7~A0), each bit being latched-in on Serial
Data Input (DIO) during the rising edge of Serial Clock (C).
Table 7. Read Electronic Manufacturer ID & Device ID (REMS) Data-Out Sequence
Figure 18. Read Electronic Manufacturer ID & Device ID (REMS) Instruction Sequence and Data-Out Sequence
(October, 2010, Version 1.2)
Manufacture Identification
DIO
DIO
37h
DO
DO
S
S
C
C
Notes:
(1) ADD=00h will output the manufacturer ID first and ADD=01h will output device ID first
24 25 26 27 28 29 30 31
7
0 1 2 3 4 5 6 7
6 5 4
High Impedance
ADD
Instruction
3
(1)
2
1
0
S
MSB
32 33 34 35 36 37 38 39
7 6 5 4 3 2 1
MSB
15 14 13
) Low.
8
Manufacturer ID
9
2 Dummy Bytes
10
23
If the one-byte address is set to 01h, then the device ID will
be read first and then followed by the Manufacturer ID. On
the other hand, if the one-byte address is set to 00h, then the
Manufacturer ID will be read first and then followed by the
device ID.
The instruction sequence is shown in Figure 18. The Read
Electronic Manufacturer ID & Device ID (REMS) instruction is
terminated by driving Chip Select (
data output.
When Chip Select (
Stand-by Power mode. Once in the Stand-by Power mode,
the device waits to be selected, so that it can receive, decode
and execute instructions.
3 2 1 0
20 21 22 23
Device Identification
12h (A25L040)
0
0
MSB
7 6 5 4 3 2 1 0
40 41 42 43 44 45 46 47
S
Device ID
) is driven High, the device is put in the
AMIC Technology Corp.
A25L040 Series
S
) High at any time during
MSB