AM29F010B-70FC 查看數據表（PDF） - Advanced Micro Devices

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AM29F010B-70FC

1 megabit (128 K x 8-Bit) CMOS 5.0 volt-only, uniform sector flash memory

Advanced Micro Devices 

PRELIMINARY

Program and Erase Operation Status

During an erase or program operation, the system may

check the status of the operation by reading the status

bits on DQ7–DQ0. Standard read cycle timings and ICC

read specifications apply. Refer to “Write Operation

Status” for more information, and to each AC Charac-

teristics section in the appropriate data sheet for timing

diagrams.

Standby Mode

When the system is not reading or writing to the device,

it can place the device in the standby mode. In this

mode, current consumption is greatly reduced, and the

outputs are placed in the high impedance state, inde-

pendent of the OE# input.

The device enters the CMOS standby mode when the

CE# pin is held at VCC ± 0.5 V. (Note that this is a more

restricted voltage range than VIH.) The device enters

the TTL standby mode when CE# is held at VIH. The

device requires the standard access time (tCE) before

it is ready to read data.

If the device is deselected during erasure or program-

ming, the device draws active current until the

operation is completed.

ICC3 in the DC Characteristics tables represents the

standby current specification.

Output Disable Mode

When the OE# input is at VIH, output from the device is

disabled. The output pins are placed in the high imped-

ance state.

Sector

SA0

SA1

SA2

SA3

SA4

SA5

SA6

SA7

Table 2. Am29F010B Sector Addresses Table

A16

A15

A14

Address Range

0

0

0

00000h-03FFFh

0

0

1

04000h-07FFFh

0

1

0

08000h-0BFFFh

0

1

1

0C000h-0FFFFh

1

0

0

10000h-13FFFh

1

0

1

14000h-17FFFh

1

1

0

18000h-1BFFFh

1

1

1

1C000h-1FFFFh

Autoselect Mode

The autoselect mode provides manufacturer and de-

vice identification, and sector protection verification,

through identifier codes output on DQ7–DQ0. This

mode is primarily intended for programming equipment

to automatically match a device to be programmed with

its corresponding programming algorithm. However,

the autoselect codes can also be accessed in-system

through the command register.

When using programming equipment, the autoselect

mode requires VID on address pin A9. Address pins A6,

A1, and A0 must be as shown in Autoselect Codes

(High Voltage Method) table. In addition, when verify-

ing sector protection, the sector address must appear

on the appropriate highest order address bits. Refer to

the corresponding Sector Address Tables. The Com-

mand Definitions table shows the remaining address

bits that are don’t care. When all necessary bits have

been set as required, the programming equipment may

then read the corresponding identifier code on DQ7–

DQ0.

To access the autoselect codes in-system, the host

system can issue the autoselect command via the

command register, as shown in the Command Defini-

tions table. This method does not require VID. See

“Command Definitions” for details on using the autose-

lect mode.

Am29F010B

9

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