T25S16AFEPR datasheet(17/74 Pages) HMSEMI

17 / 74 page

Table 5.4 Basic SPI Flash Parameter, JEDEC SFDP Rev B (Sheet 3 of 5)

SFDP

Parameter

Relative Byte

Address

SFDP

Dword

Name

Data

Description

58h

JEDEC

Basic

Flash

Parameter

Dword-11

81h

Bits 23 = Byte Program Typical time, additional byte units (0b:1 μs, 1b:8 μs) = 1 μs

= 0b

Bits 22:19 = Byte Program Typical time, additional byte count, (count+1)*units,

count = 0010b,(typ Program time = (count +1) * units) = 3*1 μs =3 μs

Bits 18 = Byte Program Typical time, first byte units (0b:1 μs, 1b:8 μs) = 8 μs = 1b

Bits 17:14 = Byte Program Typical time, first byte count, (count+1)*units, count =

0001b, (typ Program time = (count +1) * units) = 2*8 μs = 16 μs

Bits 13 = Page Program Typical time units (0b:8 μs, 1b:64 μs) = 64 μs = 1b

Bits 12:8 = Page Program Typical time count, (count+1)*units, count = 00111b, (typ

Program time = (count +1) * units) = 8*64 μs = 500 μs

Bits 7:4 = N = 1000b, Page size= 2N = 256B page

Bits 3:0 = Count = 0001b = (Max Page Program time / (2 * Typ Page Program

time))- 1

Multiplier from typical Page Program time to maximum Page Program time = 4x

multiplier

Max Page Program time = 2*(Count +1)*Typ Page Program time

Binary Fields: 0-0010-1-0001-1-00111-1000-0001

Nibble Format: 0001_0100_0110_0111_1000_0001

Hex Format: 14_67_81

59h

67h

5Ah

14h

5Bh

CCh

128 Mb = 1100_1100b = CCh

Bit 31 Reserved = 1b

Bits 30:29 = Chip Erase, Typical time units (00b: 16 ms, 01b: 256 ms, 10b: 4 s, 11b:

64 s) = 4s= 10b

Bits 28:24 = Chip Erase, Typical time count, (count+1)*units, count = 01100b, (typ

Program time = (count +1) * units) = 13*4s = 50s

5Ch

JEDEC

Basic

Flash

Parameter

Dword-12

EDh

Bit 31 = Suspend and Resume supported = 0b

Bits 30:29 = Suspend in-progress erase max latency units (00b: 128ns, 01b: 1us,

10b: 8 μs,11b: 64 μs) = 1 μs= 01b

Bits 28:24 = Suspend in-progress erase max latency count = 10011b, max erase

suspend latency = (count +1) * units = 20*1 μs = 20 μs

Bits 23:20 = Erase resume to suspend interval count = 0001b, interval = (count +1)

* 64 μs = 2* 64 μs = 128 μs

Bits 19:18 = Suspend in-progress program max latency units (00b: 128ns, 01b: 1us,

10b: 8 μs,11b: 64 μs) = 1 μs= 01b

Bits 17:13 = Suspend in-progress program max latency count = 10011b, max erase

suspend latency = (count +1) * units = 20*1 μs = 20 μs

Bits 12:9 = Program resume to suspend interval count = 0001b, interval = (count

+1) * 64 μs =2 * 64 μs = 128 μs

Bit 8 = RFU = 1b

Bits 7:4 = Prohibited operations during erase suspend

= xxx0b: May not initiate a new erase anywhere (erase nesting not permitted)

+ xx1xb: May not initiate a page program in the erase suspended sector size

+ x1xxb: May not initiate a read in the erase suspended sector size

+ 1xxxb: The erase and program restrictions in bits 5:4 are sufficient

= 1110b

Bits 3:0 = Prohibited Operations During Program Suspend

= xxx1b: May not initiate a new erase in the program suspended page size

+ xx0xb: May not initiate a new page program anywhere (program nesting not

permitted)

+ x1xxb: May not initiate a read in the program suspended page size

+ 1xxxb: The erase and program restrictions in bits 1:0 are sufficient

= 1101b

Binary Fields: 0-01-10011-0001-01-10011-0001-1-1110-1101

Nibble Format: 0011_0011_0001_0110_0110_0011_1110_1101

Hex Format: 33_16_63_ED

5Dh

63h

5Eh

16h

5Fh

33h

HM25Q128A

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