A25L16P Series
Read Electronic Manufacturer ID & Device ID (REMS)
The REMS instruction is an alternative to the Release from
Power-down/Device ID instruction that provides both the
JEDEC assigned manufacturer ID and the specific device ID.
ID are shifted out on the falling edge of SCLK with most
significant bit (MSB) first as shown in figure 19. The Device ID
values are listed in Table of ID Definitions on page 23. If the
one-byte address is initially set to 01h, then device ID will be
read first and then followed by the Manufacturer ID. The
Manufacturer and Device Ids can be read continuously,
alternating from one to the other. The instruction is completed
The REMS instruction is very similar to the Release from
Power-down/Device ID instruction. The instruction is initiated
by driving the
pin low and shift the instruction code “90h”
CS
followed by two dummy bytes and one bytes address (A7~A0).
After which, the Manufacturer ID for AMIC (37) and the Device
by driving
high.
CS
Table of ID Definitions:
RDID Command
Continuation ID
7F
Manufacturer ID
37
Memory type
20
Memory density
15
RES Command
Electronic ID
14
REMS Command (1)
Continuation ID
7F
Manufacturer ID
37
Device ID
14
Notes: (1) ADD-00H will output the continuation ID first, and ADD-01H will output the device ID first.
Figure 19. Read Electronic Manufacturer & Device ID (REMS) Instruction Sequence and Data-Out Sequence
CS
6
0
1
2
3
4
5
7
8
9 10
SCLK
Instruction
2 Dummy Bytes
15
13
2
1
0
14
3
SI
High Impedance
SO
CS
28 29 30 31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47
SCLK
ADD (1)
7
6
5
4
3
2
0
1
SI
Manufacturer ID
Device ID
X
0
5
4
1
5
4
1
SO
6
3
2
0
6
3
2
7
7
7
MSB
MSB
MSB
Notes:
(1) ADD=00H will output the manufacturer’s ID first and ADD=01H will output device ID first
PRELIMINARY (March, 2006, Version 0.2)
24
AMIC Technology Corp.
AMICC [ AMIC TECHNOLOGY ]
