Graphics RAM. MSM54V25632A Datasheet

MSM54V25632A RAM. Datasheet pdf. Equivalent

Part MSM54V25632A
Description Synchronous Graphics RAM
Feature E2L0068-19-61 www.DataSheet4U.com ¡ Semiconductor ¡ Semiconductor MSM54V25632A DESCRIPTION This ve.
Manufacture OKI electronic
Datasheet
Download MSM54V25632A Datasheet




MSM54V25632A
E2L0068-19-61
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This verMsioSnM: 5J4uVn2. 51969392A
Previous version: Sep. 1998
MSM54V25632A
131,072-Word ¥ 32-Bit ¥ 2-Bank Synchronous Graphics RAM
DESCRIPTION
The MSM54V25632A is a synchronous graphics random access memory organized as 128 K words
¥ 32 bits ¥ 2 banks.
This device can operate up to 100 MHz by using synchronous interface. In addition, it has 8-column
Block Write function and Write per bit function which improves performance in graphics
systems.
FEATURES
• 131,072 words ¥ 32 bits ¥ 2 banks memory
• Single 3.3 V ±0.3 V power supply
• LVTTL compatible inputs and outputs
• All input signals are latched at rising edge of system clock
• Auto precharge and controlled precharge
• Internal pipelined operation: column address can be changed every clock cycle
• Dual internal banks controlled by A9 (Bank Address: BA)
• Independent byte operation via DQM0 to DQM3
• 8-column Block Write function
• Persistent write per bit function
• Programmable burst sequence (Sequential/Interleave)
• Programmable burst length (1, 2, 4, 8 and full page)
• Programmable CAS latency (1, 2 and 3)
• Burst stop function (full-page burst)
• Power Down operation and Clock Suspend operation
• Auto refresh and self refresh capability
• 1,024 refresh cycles/16 ms
• Package:
100-pin plastic QFP (QFP100-P-1420-0.65-BK4) (Product : MSM54V25632A-xxAGBK4)
xx indicates speed rank.
PRODUCT FAMILY
Family
MSM54V25632A-10
MSM54V25632A-12
Clock Frequency
MHz (Max.)
100
83
Package
100-pin Plastic QFP (14 ¥ 20 mm)
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MSM54V25632A
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PIN CONFIGURATION (TOP VIEW)
DQ3 1
VCCQ 2
DQ4 3
DQ5 4
VSSQ 5
DQ6 6
DQ77
VCCQ 8
DQ16 9
DQ17 10
VSSQ 11
DQ18 12
DQ19 13
VCCQ 14
VCC 15
VSS 16
DQ20 17
DQ21 18
VSSQ 19
DQ22 20
DQ23 21
VCCQ 22
DQM0 23
DQM2 24
WE 25
CAS 26
RAS 27
CS 28
BA (A9) 29
NC 30
MSM54V25632A
80 DQ28
79 VCCQ
78 DQ27
77 DQ26
76 VSSQ
75 DQ25
74 DQ24
73 VCCQ
72 DQ15
71 DQ14
70 VSSQ
69 DQ13
68 DQ12
67 VCCQ
66 VSS
65 VCC
64 DQ11
63 DQ10
62 VSSQ
61 DQ9
60 DQ8
59 VCCQ
58 NC
57 DQM3
56 DQM1
55 CLK
54 CKE
53 DSF
52 NC
51 A8
100-Pin Plastic QFP
Pin Name
A0 - A9
A0 - A8
A0 - A7
A9
DQ0 - DQ31
CS
RAS
CAS
WE
Function
Address Inputs
Row Address Inputs
Column Address Inputs
Bank Address
Data Inputs/Outputs
Chip Select
Row Address Strobe
Column Address Strobe
Write Enable
Pin Name
DQM0 - DQM3
DSF
CKE
CLK
VCC
VSS
VCCQ
VSSQ
NC
Function
DQ Mask Enable
Special Function Enable
Clock Enable
System Clock Input
Supply Voltage
Ground
Supply Voltage for DQ
Ground for DQ
No Connection
Note:
The same power supply voltage must be provided to every VCC pin and VCCQ pin.
The same GND voltage level must be provided to every VSS pin and VSSQ pin.
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