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Cypress CY14B101L User Manual

Page 6

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CY14B101L

Document Number: 001-06400 Rev. *I

Page 6 of 18

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Table 1. Hardware Mode Selection

CE

WE

OE

A

15

– A

0

Mode

IO

Power

H

X

X

X

Not Selected

Output High Z

Standby

L

H

L

X

Read SRAM

Output Data

Active

[3]

L

L

X

X

Write SRAM

Input Data

Active

L

H

L

0x4E38

0xB1C7

0x83E0

0x7C1F

0x703F

0x8B45

Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM

AutoStore Disable

Output Data
Output Data
Output Data
Output Data
Output Data
Output Data

Active

[1, 2, 3]

L

H

L

0x4E38

0xB1C7

0x83E0

0x7C1F

0x703F

0x4B46

Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM

AutoStore Enable

Output Data
Output Data
Output Data
Output Data
Output Data
Output Data

Active

[1, 2, 3]

L

H

L

0x4E38

0xB1C7

0x83E0

0x7C1F

0x703F

0x8FC0

Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM

Nonvolatile Store

Output Data
Output Data
Output Data
Output Data
Output Data

Output High Z

Active I

CC2

[1, 2, 3]

L

H

L

0x4E38

0xB1C7

0x83E0

0x7C1F

0x703F

0x4C63

Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM

Nonvolatile Recall

Output Data
Output Data
Output Data
Output Data
Output Data

Output High Z

Active

[1, 2, 3]

Notes

1. The six consecutive address locations are in the order listed. WE is HIGH during all six cycles to enable a nonvolatile cycle.
2. While there are 17 address lines on the CY14B101L, only the lower 16 lines are used to control software modes.
3. IO state depends on the state of OE. The IO table shown is based on OE Low.

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