5962-9669001HTA データシートの表示（PDF） - Micross Components

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5962-9669001HTA

128K x 8 FLASH UNIFORM SECTOR 5.0V FLASH MEMORY

Micross Components 

FLASH

AS29F010

After writing a sector erase command sequence, the

system may read DQ3 to determine whether or not an erase

operation has begun. (The sector erase timer does not apply to

the chip erase command.) If additional sectors are selected for

erasure, the entire time-out also applies after each additional

sector erase command. When the time-out is complete, DQ3

switches from “0” to “1.” The system may ignore DQ3 if the

system can guarantee that the time between additional sector

erase commands will always be less than 50μs. See also the

“Sector Erase Command Sequence” section.

After the sector erase command sequence is written, the

system should read the status on DQ7 (Data\ Polling) or DQ6

(Toggle Bit I) to ensure the device has accepted the command

sequence, and then read DQ3. If DQ3 is “1”, the internally

controlled erase cycle has begun; all further commands are

ignored until the erase operation is complete. If DQ3 is “0”,

the device will accept additional sector erase commands. To

ensure the command has been accepted, the system software

should check the status of DQ3 prior to and following each

subsequent sector erase command. If DQ3 is high on the

second status check, the last command might not have been

accepted. Table 5 shows the outputs for DQ3.

TABLE 5: WRITE OPERATION STATUS

OPERATION

DQ71

DQ6

DQ52

DQ3

Standard Embedded Program Algorithm

Mode

Embedded Erase Algorithm

DQ7\ Toggle

0

N/A

0

Toggle

0

1

Erase

Reading within Erase Suspended Sector

Suspend

Mode

Reading within Non-Erase Suspended Sector

1

Data

No toggle

Data

0

Data

N/A

Data

NOTES:

1. DQ7 requires a valid address when reading status information. Refer to the appropriate subsection for further details.

2. DQ5 switches to ‘1’ when an Embedded Program or Embedded Erase operation has exceeded the maximum timing limits. See “DQ5: Exceeding Timing

Limits” for more information.

ABSOLUTE MAXIMUM RATINGS*

Ambient Temperature with Power Applied...-55°C to +125°C

Voltage with Respect to Ground

VCC1...................................................-2.0V to +7.0V

A92...................................................-2.0V to +13.0V

All other pins1....................................-2.0V to +7.0V

Output Short Circuit Current3.......................................200mA

VCC Supply Voltage.....................................+4.50V to +5.50V

Storage Temperature......................................-65°C to +125°C

NOTES:

1. Minimum DC voltage on input or I/O pin is -0.5V. During voltage transitions, input

may overshoot VSS to -2.0V for periods of up to 20ns. See Figure 5. Maximum DC

voltage on input and I/O pins is VCC + 0.5V. During voltage transitions, input and I/O

pins may overshoot VCC + 2.0V for periods up to 20ns. See Figure 6.

2. Minimum DC voltage on A9 pin is -0.5V. During voltage transitions, A9 pins may

overshoot VSS to -2.0V for periods of up to 20ns. See Figure 5. Maximum DC input

voltage on A9 is +12.5V which may overshoot to 14.0V for periods up to 20ns.

3. No more than one output shorted at a time. Duration of the short circuit should not be

greater than one second.

FIGURE 5: Maximum Negative

Overshoot Waveform

*Stresses greater than those listed under “Absolute Maximum Ratings”

may cause permanent damage to the device. This is a stress rating only and

functional operation of the device at these or any other conditions above

those indicated in the operation section of this specification is not implied.

Exposure to absolute maximum rating conditions for extended periods may

affect reliability.

FIGURE 6: Maximum Positive

Overshoot Waveform

AS29F010

Rev. 2.6 11/10

12

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