SST34HF1622C-70-4C-L1SE View Datasheet(PDF) - Silicon Storage Technology

Part Name

Description

MFG CO.

SST34HF1622C-70-4C-L1SE

16 Mbit Concurrent SuperFlash + 2/4/8 Mbit SRAM ComboMemory

Silicon Storage Technology 

16 Mbit Concurrent SuperFlash + 2/4/8 Mbit SRAM ComboMemory

SST34HF1602C / SST34HF1622C / SST34HF1642C

SST34HF1642D / SST34HF1682D / SST34HF1622S / SST34HF1642S

Advance Information

TABLE 7: SOFTWARE COMMAND SEQUENCE

Command

Sequence

1st Bus

Write Cycle

2nd Bus

Write Cycle

3rd Bus

Write Cycle

4th Bus

Write Cycle

5th Bus

Write Cycle

6th Bus

Write Cycle

Addr1 Data2 Addr1 Data2 Addr1 Data2 Addr1 Data2 Addr1 Data2 Addr1 Data2

Word-/Byte-Program 5555H AAH 2AAAH 55H 5555H A0H WA3 Data

Sector-Erase

Block-Erase

5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H SAX4 30H

5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H BAX4 50H

Chip-Erase

5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H 5555H 10H

Erase-Suspend

XXXXH B0H

Erase-Resume

XXXXH 30H

Query Sec ID5

5555H AAH 2AAAH 55H 5555H 88H

User Security ID

5555H AAH 2AAAH 55H 5555H A5H SIWA6 Data

Word-/Byte-Program

User Security ID

Program Lock-out7

5555H AAH 2AAAH 55H 5555H 85H

XXH 0000H

Software ID Entry8

5555H AAH 2AAAH 55H BKX9 90H

5555H

Software ID Exit/

Sec ID Exit10,11

5555H AAH 2AAAH 55H 5555H F0H

Software ID Exit/

Sec ID Exit10,11

XXH F0H

T7.0 1256

1. Address format A14-A0 (Hex), Addresses A19-A15 can be VIL or VIH, but no other value, for the command sequence when in x16 mode.

When in x8 mode, Addresses A19-A15, Address A-1 and DQ14-DQ8 can be VIL or VIH, but no other value, for the command sequence.

2. DQ15-DQ8 can be VIL or VIH, but no other value, for the command sequence

3. WA = Program word/byte address

4. SAX for Sector-Erase; uses A19-A10 address lines

BAX for Block-Erase; uses A19-A15 address lines

5. For SST34HF16x2C/D/S,

SST ID is read with A3 = 0 (Address range = 00000H to 00007H),

User ID is read with A3 = 1 (Address range = 00010H to 00017H).

Lock Status is read with A7-A0 = 000FFH. Unlocked: DQ3 = 1 / Locked: DQ3 = 0.

6. SIWA = User Security ID Program word/byte address

For SST34HF16x2C/D/S, valid Word-Addresses for User Sec ID are from C0010H-C0017H.

All 4 cycles of User Security ID Word-Program and Program Lock-out must be completed before going back to Read-Array mode.

7. The User Security ID Program Lock-out command must be executed in x16 mode (BYTE#=VIH).

8. The device does not remain in Software Product Identification mode if powered down.

9. A19 and A18 = VIL

10. Both Software ID Exit operations are equivalent

11. If users never lock after programming, User Sec ID can be programmed over the previously unprogrammed bits (data=1) using the

User Sec ID mode again (the programmed “0” bits cannot be reversed to “1”).

For SST34HF16x2C/D/S, valid Word-Addresses for User Sec ID are from C0010H-C0017H.

©2004 Silicon Storage Technology, Inc.

14

S71256-00-000

3/04

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