EPM240T100C5N 参数 Datasheet PDF下载

型号：	EPM240T100C5N
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分类和应用：	可编程逻辑器件输入元件PC
文件页数/大小：	295 页 / 3815 K
品牌：	ALTERA [ ALTERA CORPORATION ]

10–2

Chapter 10: Replacing Serial EEPROMs with MAX II User Flash Memory

List of Vendors and Devices

The differences between the UFM block and serial EEPROMs that you should

consider in your integration of serial EEPROM applications are the sector-based erase

and erase/reprogram cycles. Serial EEPROMs support byte wide erase, which is

automatically implemented during a byte write sequence. The UFM block supports

byte writes, but does not support byte erase requiring a sector-based erase sequence

prior to any programming or writing. If the data content of a specific byte location

needs to be overwritten in the UFM, the entire sector that byte resides in must be

erased unless that byte location was already erased (all 1s). For programming

endurance, the UFM erase/reprogram cycles do not meet the 10

and greater cycles

seen in serial EEPROMs.

Refer to the

DC and Switching Characteristics

chapter in the

MAX II Device Handbook

for

the MAX II UFM block erase/programming endurance specification.

List of Vendors and Devices

Table 10–2

through

Table 10–10

list the vendors and their devices which can be

replaced by the MAX II UFM block. The operating condition range for the UFM block

and MAX II devices are within the range of the devices listed.

Table 10–2.

Asahi Kasei Microsystems Co. Device Characteristics

Interface

Type

EEPROM

Device

AK93C75AV

AK93C75BH

AK6480AF/M

AK6480BH/L

AK93C65AF/V

AK93C65BH

AK93C61AV

AK6440AF/M

AK6440BH/L

AK6004AF

AK93C55AF/V

AK93C55BH

AK93C51AV

AK6420AF/M

AK6420BH

AK6003AV

Size

(Bits)

8,192

4,096

2,048

SCI

—

Wire

—

Wire

—

Wire

—

Microwire

—

MAX

(MHz)

—

Operating

Voltage (V)

(1)

1.8 to 5.5

0.9 to 3.6

1.8 to 5.5

0.9 to 3.6

1.8 to 5.5

Note to

Table 10–2:

(1) The MAX II device supports two different V

CCINT

of operating voltage ranges, which are 2.375 to 2.625 V, and

3.0 to 3.6 V; the MAX IIG device supports the 1.71 to 1.89 V operating voltage range.

MAX II Device Handbook

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