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PDF HM5212325F-B60 Data sheet ( Hoja de datos )
| Número de pieza | HM5212325F-B60 | |
| Descripción | 128M LVTTL interface SDRAM 100 MHz 1-Mword x 32-bit x 4-bank PC/100 SDRAM | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HM5212325F-B60
128M LVTTL interface SDRAM
100 MHz
1-Mword × 32-bit × 4-bank
PC/100 SDRAM
ADE-203-1053A (Z)
Rev. 1.0
Oct. 18, 1999
Description
The Hitachi HM5212325F is a 128-Mbit SDRAM organized as 1048576-word × 32-bit × 4-bank. All inputs
and outputs are referred to the rising edge of the clock input. It is packaged in standard 108 bump BGA.
Features
• Single chip wide bit solution (× 32)
• 3.3 V power supply
• Clock frequency: 100 MHz (max)
• LVTTL interface
• Extremely small foot print: 1.27 mm pitch
Package: BGA (BP-108)
• 4 banks can operate simultaneously and independently
• Burst read/write operation and burst read/single write operation capability
• Programmable burst length: 4/8/full page
• 2 variations of burst sequence
Sequential (BL = 4/8/full page)
Interleave (BL = 4/8)
• Programmable CAS latency: 2/3
• Byte control by DQMB
• Refresh cycles: 4096 refresh cycles/64 ms
• 2 variations of refresh
Auto refresh
Self refresh
1 page  
Block Diagram
A0 to A13
CS
RAS
CAS
WE
CLK
CKE
14
HM5212325F-B60
64-Mbit SDRAM
4M × 16
64-Mbit SDRAM
4M × 16
4
DQMB 0 to
DQMB 3 32
DQ 0 to DQ 31
2 16
Power-up Sequence and Initialization Sequence
2 16
Power up sequence
100 µs
VCC 0 V
CKE, DQMB Low
CLK Low
CS, DQ Low
Power stabilize
Initialization sequence
200 µs
5
5 Page 
Package Dimensions
HM5212325FBP Series (BP-108)
Preliminary
HM5212325F-B60
Unit: mm
4×C1.2
Pin 1 Index
14.00
-A-
-B-
13.0 ± 0.10
A
9876 54321
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
1.27
108× φ0.75
φ0.30 M C A B
φ0.15 M C
Details of the part A
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
BP-108
—
—
1.2 g
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet HM5212325F-B60.PDF ] | |
Hoja de datos destacado
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| HM5212325F-B60 | 128M LVTTL interface SDRAM 100 MHz 1-Mword x 32-bit x 4-bank PC/100 SDRAM | Hitachi Semiconductor |
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