M45PE20-VMP6TG NUMONYX, M45PE20-VMP6TG Datasheet - Page 21
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M45PE20-VMP6TG
Manufacturer Part Number
M45PE20-VMP6TG
Description
IC FLASH 2MBIT 75MHZ 8VFQFPN
Manufacturer
NUMONYX
Series
Forté™r
Datasheet
1.M45PE20-VMN6TP.pdf
(47 pages)
Specifications of M45PE20-VMP6TG
Format - Memory
FLASH
Memory Type
FLASH
Memory Size
2M (256K x 8)
Speed
75MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-VFQFN, 8-VFQFPN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
M45PE20-VMP6TG
M45PE20-VMP6TGTR
M45PE20-VMP6TGTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
M45PE20
6.4
6.4.1
6.4.2
Read status register (RDSR)
The read status register (RDSR) instruction allows the status register to be read. The status
register may be read at any time, even while a program, erase or write cycle is in progress.
When one of these cycles is in progress, it is recommended to check the write in progress
(WIP) bit before sending a new instruction to the device. It is also possible to read the status
register continuously, as shown in
The status bits of the status register are as follows:
WIP bit
The write in progress (WIP) bit indicates whether the memory is busy with a write, program
or erase cycle. When set to ‘1’, such a cycle is in progress, when reset to ‘0’ no such cycle is
in progress.
WEL bit
The write enable latch (WEL) bit indicates the status of the internal write enable latch. When
set to ‘1’ the internal write enable latch is set, when set to ‘0’ the internal write enable latch is
reset and no write, program or erase instruction is accepted.
Table 5.
1. WEL and WIP are volatile read-only bits (WEL is set and reset by specific instructions; WIP is
Figure 9.
S
C
D
Q
automatically set and reset by the internal logic of the device).
b7
0
Status register format
Read status register (RDSR) instruction sequence and data-out sequence
0
High Impedance
1
0
2
Instruction
3
4
5
0
6
7
Figure
MSB
7
8
6
9 10 11 12 13 14 15
Status register out
0
5
9.
4
3
2
0
1
0
MSB
7
6
0
Status register out
5
4
3
WEL
2
(1)
1
Instructions
0
7
AI02031E
WIP
b0
(1)
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