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MB84VD22281EE Datasheet(PDF) 8 Page - Fujitsu Component Limited. |
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MB84VD22281EE Datasheet(HTML) 8 Page - Fujitsu Component Limited. |
8 / 63 page MB84VD2228XEA/EE/2229XEA/EE-90 8 s s s s DEVICE BUS OPERATIONS Table 1. 1 User Bus Operations (Flash=Word mode; CIOf=VCCf, SRAM=Word mode; CIOs=VCCs) Legend: L = VIL, H = VIH, X = VIL or VIH. See DC Characteristics for voltage levels. Notes: 1. Other operations except for indicated this column are inhibited. 2. WE can be VIL if OE is VIL, OE at VIH initiates the write operations. 3. Do not apply CEf = VIL, CE1s = VIL and CE2s = VIH at a time. 4. It is also used for the extended sector group protections. 5. WP/ACC = VIL; protection of boot sectors. WP/ACC = VIH; removal of boot sectors protection. WP/ACC = VACC (9V) ; Program time will reduce by 40%. 6. SA; Don’t care or Open. Operation (1), (3) CEfCE1sCE2s OE WE SA (6) LBsUBsDQ0 to DQ7 DQ8 to DQ15 RESET WP/ ACC (5) Full Standby H HX X X X X X HIGH-Z HIGH-Z H X XL Output Disable HL H H H X X X HIGH-Z HIGH-Z HX X X X H H HIGH-Z HIGH-Z L HX H H X X X HIGH-Z HIGH-Z XL Read from Flash (2) L HX LH X X X DOUT DOUT HX XL Write to Flash L HX HL X X X DIN DIN HX XL Read from SRAM H L H L H X LL DOUT DOUT HX HL HIGH-Z DOUT LH DOUT HIGH-Z Write to SRAM H L H X L X LL DIN DIN HX HL HIGH-Z DIN LH DIN HIGH-Z Temporary Sector Group Unprotection(4) X X X XXXX X X X VID X Flash Hardware Reset X HX X X X X X HIGH-Z HIGH-Z L X XL Boot Block Sector Write Protection X X X XXXX X X X X L |
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