M45PE80-VMW6TG NUMONYX, M45PE80-VMW6TG Datasheet - Page 23

• Manufacturer Part Number: M45PE80-VMW6TG
• Description: IC FLASH 8MBIT 25MHZ 8SOIC
• Manufacturer: NUMONYX
• Series: Forté™r

Specifications of M45PE80-VMW6TG

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 8M (1M x 8)
• Speed: 25MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: M45PE80-VMW6TG; M45PE80-VMW6TGTR

6.7
Figure 11. Read Data Bytes at Higher Speed (FAST_READ) instruction sequence
1. Address bits A23 to A20 are Don’t Care.
Page Write (PW)
The Page Write (PW) instruction allows bytes to be written in the memory. Before it can be
accepted, a Write Enable (WREN) instruction must previously have been executed. After
the Write Enable (WREN) instruction has been decoded, the device sets the Write Enable
Latch (WEL).
The Page Write (PW) instruction is entered by driving Chip Select (S) Low, followed by the
instruction code, three address bytes and at least one data byte on Serial Data Input (D).
The rest of the page remains unchanged if no power failure occurs and the device is not
reset during the write cycle.
The Page Write (PW) instruction performs a page erase cycle even if only one byte is
updated.
If the 8 least significant address bits (A7-A0) are not all zero, all transmitted data exceeding
the addressed page boundary roll over, and are written from the start address of the same
page (the one whose 8 least significant address bits (A7-A0) are all zero). Chip Select (S)
must be driven Low for the entire duration of the sequence.
The instruction sequence is shown in
S
C
D
Q
S
C
D
Q
0
and data-out sequence
7
1
32 33 34
High Impedance
6
2
Instruction
Dummy Byte
5
3
4
35
4
3
36 37 38 39 40 41 42 43 44 45 46
5
2
6
1
7
23
0
8
MSB
22 21
7
9 10
24 BIT ADDRESS
Figure
6
DATA OUT 1
5
12.
3
28 29 30 31
4
2
3
1
2
0
1
0
47
MSB
7
6
DATA OUT 2
5
4
3
2
1
0
MSB
7
AI04006
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