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A2S56D40CTP 데이터시트 PDF




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부품번호 A2S56D40CTP 기능
기능 (A2S56D20CTP - A2S56D40CTP) 256Mb DDR SDRAM
제조업체 Powerchip Semiconductor
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A2S56D40CTP 데이터시트, 핀배열, 회로
www.DataSheet4U.com
256Mb DDR SDRAM Specification
A2S56D20CTP
A2S56D30CTP
A2S56D40CTP
Powerchip Semiconductor Corp.
No.12, Li-Hsin Rd.1, Science-based Industrial Park, Hsin-Chu
Taiwan, R.O.C.
TEL: 886-3-5795000
FAX: 886-3-5792168




A2S56D40CTP pdf, 반도체, 판매, 대치품
Powerchip Semiconductor Corp.
256Mb DDR Synchronous DRAMwww.DataSheet4U.com
A2S56D20CTP (4-bank x 16,777,216 - word x 4-bit)
A2S56D30CTP (4-bank x 8,388,608 - word x 8-bit)
A2S56D40CTP (4-bank x 4,194,304 - word x 16-bit)
PIN CONFIGURATION (TOP VIEW)
x4
x8
VDD
NC
VDDQ
NC
DQ0
VSSQ
NC
NC
VDDQ
NC
DQ1
VSSQ
NC
NC
VDDQ
NC
NC
VDD
NC
NC
/WE
/CAS
/RAS
/CS
NC
BA0
BA1
A10/AP
A0
A1
A2
A3
VDD
VDD
DQ0
VDDQ
NC
DQ1
VSSQ
NC
DQ2
VDDQ
NC
DQ3
VSSQ
NC
NC
VDDQ
NC
NC
VDD
NC
NC
/WE
/CAS
/RAS
/CS
NC
BA0
BA1
A10/AP
A0
A1
A2
A3
VDD
VDD
DQ0
VDDQ
DQ1
DQ2
VSSQ
DQ3
DQ4
VDDQ
DQ5
DQ6
VSSQ
DQ7
NC
VDDQ
LDQS
NC
VDD
NC
LDM
/WE
/CAS
/RAS
/CS
NC
BA0
BA1
A10/AP
A0
A1
A2
A3
VDD
x16
PIN CONFIGURATION
(TOP VIEW)
1 66
2 65
3 64
4 63
5 62
6 61
7 60
8 59
9 58
10 57
11 56
12 55
13 54
14 53
15 52
16 51
17 50
18 49
19 48
20 47
21 46
22 45
23 44
24 43
25 42
26 41
27 40
28 39
29 38
30 37
31 36
32 35
33 34
VSS
DQ15
VSSQ
DQ14
DQ13
VDDQ
DQ12
DQ11
VSSQ
DQ10
DQ9
VDDQ
DQ8
NC
VSSQ
UDQS
NC
VREF
VSS
UDM
/CLK
CLK
CKE
NC
A12
A11
A9
A8
A7
A6
A5
A4
VSS
VSS
DQ7
VSSQ
NC
DQ6
VDDQ
NC
DQ5
VSSQ
NC
DQ4
VDDQ
NC
NC
VSSQ
DQS
NC
VREF
VSS
DM
/CLK
CLK
CKE
NC
A12
A11
A9
A8
A7
A6
A5
A4
VSS
VSS
NC
VSSQ
NC
DQ3
VDDQ
NC
NC
VSSQ
NC
DQ2
VDDQ
NC
NC
VSSQ
DQS
NC
VREF
VSS
DM
/CLK
CLK
CKE
NC
A12
A11
A9
A8
A7
A6
A5
A4
VSS
CLK,/C LK
CKE
/CS
/RAS
/C AS
/WE
DQ0-7
DQS
DM
Vref
: Master Clock
: Clock Enable
: Chip Select
: Row Address Strobe
: Column Address Strobe
: Write Enable
: Data I/O
: Data Strobe
: Wrtie Mask
: Reference Voltage
A0 -1 2
BA0 ,1
Vdd
Vd dQ
Vs s
Vs s Q
: Address Input
: Bank Address Input
: Power Supply
: Power Supply for Output
: Ground
: Ground for Output
Jun.2004
Page- 2
Rev.1.0

4페이지










A2S56D40CTP 전자부품, 판매, 대치품
Powerchip Semiconductor Corp.
256Mb DDR Synchronous DRAMwww.DataSheet4U.com
A2S56D20CTP (4-bank x 16,777,216 - word x 4-bit)
A2S56D30CTP (4-bank x 8,388,608 - word x 8-bit)
A2S56D40CTP (4-bank x 4,194,304 - word x 16-bit)
BASIC FUNCTIONS
The A2S56D20/30/40 CTP provides basic
functions, bank (row) activate, burst read / write,
bank (row) precharge, and auto / self refresh.
Each command is defined by control signals of /
RAS, /CAS and /WE at CLK rising edge.
In addition to 3 signals, /CS ,CKE and A10 are
used as chip select,refresh option , and precharge
option , respectively .
To know the detailed definition of commands, please
see the command truth table.
/CLK
CLK
/CS
/RAS
/CAS
/WE
CKE
A10
Chip Select : L=select, H=deselect
Command
Command
Command
define basic commands
Refresh Option @refresh command
Precharge Option @precharge or read/write command
Activate (ACT) [/RAS =L, /CAS =/WE =H]
ACT command activates a row in an idle bank indicated by BA.
Read (READ) [/RAS =H, /CAS =L, /WE =H]
READ command starts burst read from the active bank indicated by BA. First
output data appears after /CAS latency. When A10 =H at this command, the
bank is deactivated after the burst read (auto-precharge, READA).
Write (WRITE) [/RAS =H, /CAS =/WE =L]
WRITE command starts burst write to the active bank indicated by BA. Total
data length to be written is set by burst length. When A10 =H at this command,
the bank is deactivated after the burst write (auto-precharge, WRITEA).
Precharge (PRE) [/RAS =L, /CAS =H, /WE =L]
PRE command deactivates the active bank indicated by BA. This command
also terminates burst read / write operation. When A10 =H at this command, all
banks are deactivated (precharge all, PREA ).
Auto-Refresh (REFA) [/RAS =/CAS =L, /WE =CKE =H]
REFA command starts auto-refresh cycle. Refresh address including bank
address are generated internally. After this command, the banks are precharged
automatically.
Jun.2004
Page- 5
Rev.1.0

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관련 데이터시트

부품번호상세설명 및 기능제조사
A2S56D40CTP

(A2S56D20CTP - A2S56D40CTP) 256Mb DDR SDRAM

Powerchip Semiconductor
Powerchip Semiconductor

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