S70FS01GS datasheet(37/141 Pages) CYPRESS

номер детали	S70FS01GS

подробное описание детали	1-Gbit (128 MByte), 1.8 V FS-S Flash

PDF	141 Pages

Scroll/Zoom	100%

производитель	CYPRESS [Cypress Semiconductor]

домашняя страница	http://www.cypress.com

Logo

37 / 141 page

S70FS01GS

Document Number: 002-03833 Rev. *C

Page 37 of 141

5.5.2

DDR Output Timing

Figure 5.15

SPI DDR Output Timing

5.5.3

DDR Data Learning Pattern Timing

Figure 5.16

SPI Data Learning Pattern DDR Data Valid Window

Notes:

1. tCLH is the shorter duration of tCL or tCH.

2. tO_SKEW is the maximum difference (delta) between the minimum and maximum tV (output valid) across all IO signals.

3. tOTT is the maximum Output Transition Time from one valid data value to the next valid data value on each IO.

4. tOTT is dependent on system level considerations including:

a. Memory device output impedance (drive strength).

b. System level parasitics on the IOs (primarily bus capacitance).

c. Host memory controller input VIH and VIL levels at which 0 to 1 and 1 to 0 transitions are recognized.

d. As an example, assuming that the above considerations result in a memory output slew rate of 2 V/ns and a 3V transition

(from 1 to 0 or 0 to 1) is required by the host, the tOTT would be: tOTT = 2V / (2 V/ns) = 1.0 ns

e. tOTT is not a specification tested by Cypress, it is system dependent and must be derived by the system designer based on the above considerations.

CS#

SCK

IO's

MSB

LSB

tCS

tDIS

tHO

SCK

IO Slow

IO Fast

IO_valid

Slow D1

Slow D2

Fast D1

Fast D2

IO_SKEW

OTT

SCK

V_min

S70FS01GS датащи(PDF) 37 Page - Cypress Semiconductor

S70FS01GS датащи(HTML) 37 Page - Cypress Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL