F28F010-65 데이터 시트보기 (PDF) - Intel

부품명

상세내역

제조사

F28F010-65

28F010 1024K (128K X 8) CMOS FLASH MEMORY

Intel 

E

28F010

2.2.1.3

Standby

With CE# at a logic-high level, the standby

operation disables most of the 28F010’s circuitry

and substantially reduces device power

consumption. The outputs are placed in a high-

impedance state, independent of the OE# signal. If

the 28F010 is deselected during erasure,

programming, or program/erase verification, the

device draws active current until the operation is

terminated.

2.2.1.4

Intelligent Identifier Operation

The intelligent identifier operation outputs the

manufacturer code (89H) and device code (B4H).

Programming equipment automatically matches the

device with its proper erase and programming

algorithms.

With CE# and OE# at a logic low level, raising A9 to

high voltage VID (see DC Characteristics) activates

the operation. Data read from locations 0000H and

0001H represent the manufacturer's code and the

device code, respectively.

The manufacturer and device codes can also be

read via the command register, for instances where

the 28F010 is erased and reprogrammed in the

target system. Following a write of 90H to the

command register, a read from address location

0000H outputs the manufacturer code (89H). A

read from address 0001H outputs the device code

(B4H).

2.2.1.5

Write

Device erasure and programming are accomplished

via the command register, when high voltage is

applied to the VPP pin. The contents of the register

serve as input to the internal state machine. The

state machine outputs dictate the function of the

device.

The command register itself does not occupy an

addressable memory location. The register is a

latch used to store the command, along with

address and data information needed to execute

the command.

The command register is written by bringing WE# to

a logic-low level (VIL), while CE# is low. Addresses

are latched on the falling edge of WE#, while data is

latched on the rising edge of the WE# pulse.

Standard microprocessor write timings are used.

Refer to AC Characteristics—Write/Erase/Program

Only Operations and the erase/programming

waveforms for specific timing parameters.

2.2.2

COMMAND DEFINITIONS

When low voltage is applied to the VPP pin, the

contents of the command register default to 00H,

enabling read-only operations.

Placing high voltage on the VPP pin enables

read/write operations. Device operations are

selected by writing specific data patterns into the

command register. Table 3 defines these 28F010

register commands.

10

Share Link: