Cypress CY14B108L Uživatelský manuál stáhnout pdf (Strana 12)

ADVANCE

CY14B108L, CY14B108N

Document Number: 001-45523 Rev. *A Page 12 of 20

Figure 8. SRAM Write Cycle #2: CE

Controlled

[13, 21, 22, 23]

Figure 9. AutoStore or Power Up RECALL

[24]

Note

24. Read and Write cycles are ignored during STORE, RECALL, and while VCC is below V

SWITCH

Switching Waveforms (continued)

ADDRESS

SCE

PWE

DATA IN

DATA OUT

HIGH IMPEDANCE

DATA VALID

BHE , BLE

SWITCH

STORE

HRECALL

AutoStore

POWER-UP RECALL

Read & Write Inhibited

STORE occurs only

if a SRAM write

has happened

No STORE occurs

without atleast one

SRAM write

VCCRISE

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Cypress CY14B108L Uživatelský manuál Strana 12