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부품번호 | AT49F040 기능 |
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기능 | 5-volt-only in-system Flash Memory | ||
제조업체 | ATMEL Corporation | ||
로고 | |||
전체 13 페이지수
Features
• Single-voltage Operation
– 5V Read
– 5V Reprogramming
• Fast Read Access Time – 55 ns
• Internal Program Control and Timer
• 16-Kbyte Boot Block with Lockout
• Fast Erase Cycle Time – 10 seconds
• Byte-by-byte Programming – 50 µs/Byte
• Hardware Data Protection
• DATA Polling for End of Program Detection
• Low Power Dissipation
– 50 mA Active Current
– 100 µA CMOS Standby Current
• Typical 10,000 Write Cycles
Description
The AT49F040 is a 5-volt-only in-system Flash Memory. Its 4 megabits of memory is
organized as 524,288 words by 8 bits. Manufactured with Atmel’s advanced nonvola-
tile CMOS technology, the device offers access times to 55 ns with power dissipation
of just 275 mW over the commercial temperature range. When the device is dese-
lected, the CMOS standby current is less than 100 µA.
The device contains a user-enabled “boot block” protection feature. The AT49F040
locates the boot block at lowest order addresses (“bottom boot”).
(continued)
4-megabit
(512K x 8)
5-volt Only
Flash Memory
AT49F040
Pin Configurations
Pin Name
A0 - A18
CE
OE
WE
I/O0 - I/O7
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
TSOP Top View
Type 1
A11
A9
A8
A13
A14
A17
WE
VCC
A18
A16
A15
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 OE
31 A10
30 CE
29 I/O7
28 I/O6
27 I/O5
26 I/O4
25 I/O3
24 GND
23 I/O2
22 I/O1
21 I/O0
20 A0
19 A1
18 A2
17 A3
DIP Top View
A18
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 VCC
31 WE
30 A17
29 A14
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
21 I/O7
20 I/O6
19 I/O5
18 I/O4
17 I/O3
PLCC Top View
A7 5
A6 6
A5 7
A4 8
A3 9
A2 10
A1 11
A0 12
I/O0 13
29 A14
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
21 I/O7
Rev. 0998D–03/01
1
Command Definition (in Hex)
Command
Sequence
Bus
Cycles
1st Bus
Cycle
Addr Data
2nd Bus
Cycle
Addr Data
3rd Bus
Cycle
Addr Data
Read
Chip Erase
1 Addr DOUT
6 5555 AA 2AAA 55 5555 80
Byte Program
4 5555 AA 2AAA 55 5555 A0
Boot Block Lockout(1)
6 5555 AA 2AAA 55 5555 80
Product ID Entry
3 5555 AA 2AAA 55 5555 90
Product ID Exit(2)
3 5555 AA 2AAA 55 5555 F0
Product ID Exit(2)
1 XXXX F0
Notes: 1. The 16K byte boot sector has the address range 00000H to 03FFFH.
2. Either one of the Product ID exit commands can be used.
4th Bus
Cycle
Addr Data
5555
Addr
5555
AA
DIN
AA
5th Bus
Cycle
Addr Data
2AAA 55
2AAA 55
6th Bus
Cycle
Addr Data
5555 10
5555 40
Absolute Maximum Ratings*
Temperature Under Bias................................ -55°C to +125°C
Storage Temperature ..................................... -65°C to +150°C
All Input Voltages
(including NC Pins)
with Respect to Ground ...................................-0.6V to +6.25V
All Output Voltages
with Respect to Ground .............................-0.6V to VCC + 0.6V
Voltage on OE
with Respect to Ground ...................................-0.6V to +13.5V
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
4 AT49F040
4페이지 AC Byte Load Characteristics
Symbol
tAH
tCS
tCH
tWP
tDS
tDH, tOEH
tWPH
Parameter
Address Hold Time
Chip Select Set-up Time
Chip Select Hold Time
Write Pulse Width (WE or CE)
Data Set-up Time
Data, OE Hold Time
Write Pulse Width High
AC Byte Load Waveforms
WE Controlled
AT49F040
Min Max Units
50 ns
0 ns
0 ns
90 ns
50 ns
0 ns
90 ns
CE Controlled
7
7페이지 | |||
구 성 | 총 13 페이지수 | ||
다운로드 | [ AT49F040.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
AT49F040 | 5-volt-only in-system Flash Memory | ATMEL Corporation |
AT49F040A | 5-volt only in-system reprogrammable Flash memory | ATMEL Corporation |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |