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HY29F400ABT-70 Datasheet(PDF) 5 Page - Hynix Semiconductor |
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HY29F400ABT-70 Datasheet(HTML) 5 Page - Hynix Semiconductor |
5 / 40 page 5 Rev. 1.0/Jan. 02 HY29F400A MEMORY ARRAY ORGANIZATION The 4 Mbit Flash memory array is organized into 11 blocks called sectors (S0, S1, . . . , S10). A sector is the smallest unit that can be erased and which can be protected to prevent accidental or unauthorized erasure. See the ‘Bus Operations’ and ‘Command Definitions’ sections of this docu- ment for additional information on these functions. In the HY29F400A, four of the sectors, which com- prise the boot block, vary in size from 8 to 32 Kbytes (4 to 16 Kwords), while the remaining seven sectors are uniformly sized at 64 Kbytes (32 Kwords). The boot block can be located at the bottom of the address range (HY29F400AB) or at the top of the address range (HY29F400AT). Table 1. HY29F400A Memory Array Organization Notes: 1. X indicates Don’t Care. 2. Address in Byte Mode is A[17:-1]. 3. Address in Word Mode is A[17:0]. BUS OPERATIONS Device bus operations are initiated through the internal command register, which consists of sets of latches that store the commands, along with the address and data information, if any, needed to execute the specific command. The command register itself does not occupy any addressable memory location. The contents of the command register serve as inputs to an internal state ma- chine whose outputs control the operation of the device. Table 2 lists the normal bus operations, e c i v e D r o t c e S e z i S ) W K / B K ( s s e r d d A r o t c e S e d o M e t y B e g n a R s s e r d d A 2 e d o M d r o W e g n a R s s e r d d A 3 ] 7 1 [ A ] 6 1 [ A ] 5 1 [ A ] 4 1 [ A ] 3 1 [ A ] 2 1 [ A 0 S2 3 / 4 6 000 X X X F F F F 0 x 0 - 0 0 0 0 0 x 0F F F 7 0 x 0 - 0 0 0 0 0 x 0 1 S2 3 / 4 6 0 0 1 XXX F F F F 1 x 0 - 0 0 0 0 1 x 0F F F F 0 x 0 - 0 0 0 8 0 x 0 2 S2 3 / 4 6 0 1 0 XXX F F F F 2 x 0 - 0 0 0 0 2 x 0F F F 7 1 x 0 - 0 0 0 0 1 x 0 3 S2 3 / 4 6 0 1 1 XXX F F F F 3 x 0 - 0 0 0 0 3 x 0F F F F 1 x 0 - 0 0 0 8 1 x 0 4 S2 3 / 4 6 1 0 0 XXX F F F F 4 x 0 - 0 0 0 0 4 x 0F F F 7 2 x 0 - 0 0 0 0 2 x 0 5 S2 3 / 4 6 1 0 1 XXX F F F F 5 x 0 - 0 0 0 0 5 x 0F F F F 2 x 0 - 0 0 0 8 2 x 0 6 S2 3 / 4 6 1 1 0 XXX F F F F 6 x 0 - 0 0 0 0 6 x 0F F F 7 3 x 0 - 0 0 0 0 3 x 0 7 S6 1 / 2 3 1 1 10X X F F F 7 7 x 0 - 0 0 0 0 7 x 0F F F B 3 x 0 - 0 0 0 8 3 x 0 8 S4 / 8 1111 00 F F F 9 7 x 0 - 0 0 0 8 7 x 0F F F C 3 x 0 - 0 0 0 C 3 x 0 9 S4 / 8 1111 0 1 F F F B 7 x 0 - 0 0 0 A 7 x 0F F F D 3 x 0 - 0 0 0 D 3 x 0 0 1 S8 / 6 1 11111 X F F F F 7 x 0 - 0 0 0 C 7 x 0F F F F 3 x 0 - 0 0 0 E 3 x 0 0 S8 / 6 1 00000 X F F F 3 0 x 0 - 0 0 0 0 0 x 0F F F 1 0 x 0 - 0 0 0 0 0 x 0 1 S4 / 8 0000 1 0 F F F 5 0 x 0 - 0 0 0 4 0 x 0F F F 2 0 x 0 - 0 0 0 2 0 x 0 2 S4 / 8 0000 11 F F F 7 0 x 0 - 0 0 0 6 0 x 0F F F 3 0 x 0 - 0 0 0 3 0 x 0 3 S6 1 / 2 3 000 1 X X F F F F 0 x 0 - 0 0 0 8 0 x 0F F F 7 0 x 0 - 0 0 0 4 0 x 0 4 S2 3 / 4 6 0 0 1 XXX F F F F 1 x 0 - 0 0 0 0 1 x 0F F F F 0 x 0 - 0 0 0 8 0 x 0 5 S2 3 / 4 6 0 1 0 XXX F F F F 2 x 0 - 0 0 0 0 2 x 0F F F 7 1 x 0 - 0 0 0 0 1 x 0 6 S2 3 / 4 6 0 1 1 XXX F F F F 3 x 0 - 0 0 0 0 3 x 0F F F F 1 x 0 - 0 0 0 8 1 x 0 7 S2 3 / 4 6 1 0 0 XXX F F F F 4 x 0 - 0 0 0 0 4 x 0F F F 7 2 x 0 - 0 0 0 0 2 x 0 8 S2 3 / 4 6 1 0 1 XXX F F F F 5 x 0 - 0 0 0 0 5 x 0F F F F 2 x 0 - 0 0 0 8 2 x 0 9 S2 3 / 4 6 1 1 0 XXX F F F F 6 x 0 - 0 0 0 0 6 x 0F F F 7 3 x 0 - 0 0 0 0 3 x 0 0 1 S2 3 / 4 6 111 X X X F F F F 7 x 0 - 0 0 0 0 7 x 0F F F F 3 x 0 - 0 0 0 8 3 x 0 Table 1 defines the sector addresses and corre- sponding address ranges for the top and bottom boot block versions of the HY29F400A. |
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