Cypress Semiconductor CY8C24894 Manual do Utilizador descarregar pdf (Página 36)

CY8C24094, CY8C24794

CY8C24894, CY8C24994

Document Number: 38-12018 Rev. *Q Page 36 of 48

10.4.9 AC Programming Specifications

The following table lists guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V

and -40

°C ≤ T

≤ 85°C, or 3.0V to 3.6V and -40°C ≤ T

≤ 85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and

are for design guidance only.

Table 10-26. AC Programming Specifications

Symbol Description Min Typ Max Units Notes

RSCLK

Rise Time of SCLK 1 – 20 ns

FSCLK

Fall Time of SCLK 1 – 20 ns

SSCLK

Data Set up Time to Falling Edge of SCLK 40 – – ns

HSCLK

Data Hold Time from Falling Edge of SCLK 40 – – ns

SCLK

Frequency of SCLK 0 – 8 MHz

ERASEB

Flash Erase Time (Block) – 10 – ms

WRITE

Flash Block Write Time – 40 – ms

DSCLK

Data Out Delay from Falling Edge of SCLK – – 45 ns Vdd > 3.6

DSCLK3

Data Out Delay from Falling Edge of SCLK – – 50 ns 3.0 ≤ Vdd ≤ 3.6

ERASEALL

Flash Erase Time (Bulk) – 40 – ms Erase all Blocks and protection

fields at once

PROGRAM_HOT

Flash Block Erase + Flash Block Write Time – – 100

[16]

ms 0°C <= Tj <= 100°C

PROGRAM_COLD

Flash Block Erase + Flash Block Write Time – – 200

[16]

ms -40°C <= Tj <= 0°C

Note

16. For the full industrial range, the user must employ a temperature sensor user module (FlashTemp) and feed the result to the temperature argument before writing.

Refer to the Flash APIs Application Note AN2015 at http://www.cypress.com under Application Notes for more information.

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