FM25D04C-85CA6T View Datasheet(PDF) - FIDELIX
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FM25D04C-85CA6T Datasheet PDF : 61 Pages
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FM25Q32
11.2.14 Quad Data Input Page Program (32h)
The Quad Data Input Page Program instruction allows up to 256 bytes of data to be programmed
at previously erased (FFh) memory locations using four pins: IO0, IO1, IO2 and IO3. The Quad Data
Input Page Program can improve performance for PROM Programmer and applications that have
slow clock speed <5MHz. System with faster clock speed will not realize much benefit for the Quad
Data Input Program instruction since the inherent page program time is much greater than the time
it takes to clock-in the data.
To use Quad Data Input Page Program the Quad Enable in Status Register-2 must be set (QE=1),
A Write Enable instruction must be executed before the device will accept the Quad Data Input
Page Program instruction (Status Register-1, WEL=1). The instruction is initiated by driving the /CS
pin low and then shifting the instruction code “32h” followed by a 24-bit address (A23-A0) and at
least one data, into the IO pins. The /CS pin must be held low for the entire length of the instruction
while data is being sent to the device. All other functions of Quad Data Input Page Program are
identical standard Page Program. The Quad Data Input Page Program instruction sequence is
shown in figure 14.
/ CS
Mode3
CLK Mode0
IO0
IO1
IO2
IO3
0 1 2 3 4 5 6 7 8 9 10
28 29 30 31 32 33 34 35 36 37 38 39
Instruction(32h)
24- Bit Address
Byte1 Byte2 Byte3 Byte4
23 22 21
*
32 10 404 0404 0
5 1515 151
626 26 262
7 3737 373
/CS
CLK
IO0
IO1
IO2
IO3
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55
Byte5 Byte6 Byte7 Byte8 Byte9 Byte10 Byte11 Byte12
Mode3
Mode0
Byte253 Byte 254 Byte255 Byte256
4040404040404040 404 04040
5 1 5 15 1 51 51 515 1 5 1
51 5151 51
6 2 6 26 2 62 62 626 2 6 2 62 6262 6 2
73 7 37 3 737 3 7373 7 3 7 3 7 37 3 73
* = MSB
Figure 14. Quad Data Input Page Program Instruction Sequence Diagram
preliminary(Aug.18.2010) 30
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