Материал: 29010

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AC Byte Load Characteristics

Symbol

Parameter

Min

Max

Units

tAS, tOES

Address, OE Set-up Time

0

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

tAH

Address Hold Time

50

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

tCS

Chip Select Set-up Time

0

 

ns

tCH

Chip Select Hold Time

0

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWP

Write Pulse Width (WE or CE)

90

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

tDS

Data Set-up Time

35

 

ns

 

 

 

 

 

 

 

tDH, tOEH

Data, OE Hold Time

0

 

ns

tWPH

Write Pulse Width High

100

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

AC Byte Load Waveforms

WE Controlled

CE Controlled

4-134 AT29C010A

 

 

 

 

 

AT29C010A

 

 

 

 

 

Program Cycle Characteristics

 

 

 

 

 

 

 

 

 

 

Symbol

Parameter

Min

Max

Units

tWC

Write Cycle Time

 

10

 

ms

 

 

 

 

 

 

tAS

Address Set-up Time

0

 

 

ns

tAH

Address Hold Time

50

 

 

ns

tDS

Data Set-up Time

35

 

 

ns

 

 

 

 

 

 

tDH

Data Hold Time

0

 

 

ns

 

 

 

 

 

 

tWP

Write Pulse Width

90

 

 

ns

tBLC

Byte Load Cycle Time

 

150

 

μs

tWPH

Write Pulse Width High

100

 

 

ns

 

 

 

 

 

 

Program Cycle Waveforms (1, 2, 3)

Notes: 1.

A7 through A16 must specify the sector address

3. All bytes that are not loaded within the sector being

 

during each high to low transition of WE (or CE).

programmed will be indeterminate.

2.

OE must be high when

WE

and CE are both low.

 

4-135

Software Data

Protection Enable Algorithm (1)

LOAD DATA AA

 

TO

 

ADDRESS 5555

 

LOAD DATA 55

 

TO

 

ADDRESS 2AAA

 

LOAD DATA A0

 

TO

 

ADDRESS 5555

WRITES ENABLED

 

LOAD DATA

 

 

TO

(4)

ENTER DATA

SECTOR (128 BYTES)

 

(2)

 

 

PROTECT STATE

Notes for software program code:

1.Data Format: I/O7 - I/O0 (Hex); Address Format: A14 - A0 (Hex).

2.Data Protect state will be activated at end of program cycle.

3.Data Protect state will be deactivated at end of program period.

4.128-bytes of data MUST BE loaded.

Software Data

Protection Disable Algorithm (1)

LOAD DATA AA

 

TO

 

ADDRESS 5555

 

LOAD DATA 55

 

TO

 

ADDRESS 2AAA

 

LOAD DATA 80

 

TO

 

ADDRESS 5555

 

LOAD DATA AA

 

TO

 

ADDRESS 5555

 

LOAD DATA 55

 

TO

 

ADDRESS 2AAA

 

LOAD DATA 20

 

TO

 

ADDRESS 5555

EXIT DATA

 

(3)

LOAD DATA

PROTECT STATE

 

TO

(4)

SECTOR (128 BYTES)

 

Software Protected Program Cycle Waveform (1, 2, 3)

Notes: 1. A7 through A16 must specify the sector address

2.

OE must be high when WE and CE are both low.

during each high to low transition of WE (or CE)

3.

All bytes that are not loaded within the sector being

after the software code has been entered.

 

programmed will be indeterminate.

4-136 AT29C010A

AT29C010A

Data Polling Characteristics (1)

Symbol

Parameter

Min

Typ

Max

Units

tDH

 

Data Hold Time

10

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tOEH

 

OE Hold Time

10

 

 

ns

 

 

 

to Output Delay (2)

 

 

 

 

tOE

 

OE

 

 

 

ns

tWR

 

Write Recovery Time

0

 

 

ns

 

 

 

 

 

 

 

 

Notes: 1. These parameters are characterized and not 100% tested. 2. See tOE spec in AC Read Characteristics.

Data Polling Waveforms

Toggle Bit Characteristics (1)

Symbol

Parameter

Min

Typ

Max

Units

 

 

 

 

 

 

 

 

tDH

 

Data Hold Time

10

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tOEH

 

OE Hold Time

10

 

 

ns

 

 

 

to Output Delay (2)

 

 

 

 

tOE

 

OE

 

 

 

ns

 

 

 

 

 

 

 

 

tOEHP

 

OE High Pulse

150

 

 

ns

 

 

 

 

 

 

 

 

tWR

 

Write Recovery Time

0

 

 

ns

 

 

 

 

 

 

 

 

Notes: 1. These parameters are characterized and not 100% tested. 2. See tOE spec in AC Read Characteristics.

Toggle Bit Waveforms (1, 2, 3)

Notes: 1. Toggling either OE or CE or both OE and CE will operate toggle bit.

2. Beginning and ending state of I/O6 will vary.

3.Any address location may be used but the address should not vary.

4-137

Software Product

Identification Entry (1)

LOAD DATA AA

TO

ADDRESS 5555

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA 90

TO

ADDRESS 5555

PAUSE 10 mS

ENTER PRODUCT

IDENTIFICATION

MODE (2, 3, 5)

Software Product

Identification Exit (1)

LOAD DATA AA

TO

ADDRESS 5555

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA F0

TO

ADDRESS 5555

PAUSE 10 mS

EXIT PRODUCT

IDENTIFICATION

MODE (4)

Notes for software product identification:

1.Data Format: I/O7 - I/O0 (Hex); Address Format: A14 - A0 (Hex).

2.A1 - A16 = VIL.

Manufacture Code is read for A0 = VIL; Device Code is read for A0 = VIH.

3.The device does not remain in identification mode if powered down.

4.The device returns to standard operation mode.

5.Manufacturer Code: 1F Device Code: D5

Boot Block Lockout

Feature Enable Algorithm (1)

 

 

 

LOAD DATA AA

 

 

 

 

 

 

TO

 

 

 

 

 

ADDRESS 5555

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD DATA 55

 

 

 

 

 

 

TO

 

 

 

 

 

ADDRESS 2AAA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD DATA 80

 

 

 

 

 

 

TO

 

 

 

 

 

ADDRESS 5555

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD DATA AA

 

 

 

 

 

 

TO

 

 

 

 

 

ADDRESS 5555

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD DATA 55

 

 

 

 

 

 

TO

 

 

 

 

 

ADDRESS 2AAA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD DATA 40

 

 

 

 

 

TO

 

 

 

 

ADDRESS 5555

 

 

 

 

 

 

 

 

 

 

LOAD DATA 00

 

 

 

LOAD DATA FF

TO

 

 

 

 

TO

ADDRESS 00000 (2)

 

 

 

ADDRESS FFFFF (3)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PAUSE 10 mS

 

 

 

PAUSE 10 mS

 

 

 

 

 

 

 

 

 

Notes for boot block lockout feature enable:

1.Data Format: I/O7 - I/O0 (Hex); Address Format: A14 - A0 (Hex).

2.Lockout feature set on lower address boot block.

3.Lockout feature set on higher address boot block.

4-138 AT29C010A

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