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PDF HMD32M32M16G Data sheet ( Hoja de datos )
| Número de pieza | HMD32M32M16G | |
| Descripción | 128Mbyte (32Mx32) 72-pin Fast Page Mode | |
| Fabricantes | Hanbit Electronics | |
| Logotipo |  |
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HANBit
HMD32M32M16G
128Mbyte (32Mx32) 72-pin Fast Page Mode 4K Ref. SIMM Design 5V
Part No. HMD32M32M16G
GENERAL DESCRIPTION
The HMD32M32M16G is a 32M x 32bit dynamic RAM high-density memory module. The module consists of sixteen
CMOS 16M x 4bit DRAMs in 32-pin TSOPII packages mounted on a 72-pin, double-sided, FR-4-printed circuit board. A
0.1uF decoupling capacitor is mounted on the printed circuit board for each DRAM components. The module is a Single
In-line Memory Module with edge connections and is intended for mounting in to 72-pin edge connector sockets. All
module components may be powered from a single 5V DC power supply and all inputs and outputs are TTL-compatible.
FEATURES
www.DataShwePeatr4tUId.ceonmtification
HMD32M32M16G-- 4K Cycles/64ms Ref. Gold
w Access times : 50, 60ns
w High-density 128MByte design
w Single + 5V ±0.5V power supply
w JEDEC standard pinout
w Fast Page mode operation
w TTL compatible inputs and outputs
w FR4-PCB design
OPTIONS
w Timing
50ns access
60ns access
w Packages
72-pin SIMM
MARKING
-5
-6
M
PERFORMANCE RANGE
SPEED tRAC
tCAC
-5
50ns
13ns
-6
60ns
15ns
tRC
90ns
110ns
PRESENCE DETECT PINS
Pin 50ns
PD1 NC
PD2 Vss
PD3 Vss
PD4 Vss
60ns
NC
Vss
NC
NC
PIN ASSIGNMENT
PIN SYMBOL PIN SYMBOL PIN SYMBOL
1 Vss 25 DQ22 49 DQ8
2
DQ0
26
DQ7
50 DQ24
3 DQ16 27 DQ23 51 DQ9
4
DQ1
28
A7
52 DQ25
5 DQ17 29 A11 53 DQ10
6
DQ2
30
Vcc
54 DQ26
7 DQ18 31 A8 55 DQ11
8
DQ3
32
A9
56 DQ27
9 DQ19 33 /RAS3 57 DQ12
10 Vcc 34 /RAS2 58 DQ28
11 NC 35 NC 59 Vcc
12 A0 36 NC 60 DQ29
13 A1 37 NC 61 DQ13
14 A2 38 NC 62 DQ30
15 A3 39 Vss 63 DQ14
16 A4 40 /CAS0 64 DQ31
17 A5 41 /CAS2 65 DQ15
18 A6 42 /CAS3 66 NC
19 A10 43 /CAS1 67 PD1
20 DQ4 44 /RAS0 68
PD2
21 DQ20 45 /RAS1 69
PD3
22 DQ5 46 NC 70 PD4
23 DQ21 47
/WE
71
NC
24 DQ6 48 NC 72 Vss
72 PIN SIMM TOP VIEW
URL:www.hbe.co.kr
REV.1.0 (August.2002)
- 1 - HANBit Electronics Co.,Ltd.
1 page  
HANBit
HMD32M32M16G
Row address hold time
tRAH
10
10
ns
Column address set-up time
tASC
0
0
ns
Column Address to /RAS lead time
tRAL 25
30
ns
Read command set-up time
tRCS
0
0
ns
Read command hold referenced to /CAS
tRCH
0
0
ns
Read command hold referenced to /RAS
tRRH
0
0
ns
Write command hold time
tWCH
10
10
ns
Write command hold referenced to /RAS
tWCR
50
55
ns
Write command pulse width
tWP 10
10
ns
Write command to /RAS lead time
www.DataSheWetr4itUe.ccoommmand to /CAS lead time
tRWL
tCWL
13
8
15
10
ns
ns
Data-in set-up time
tDS 0
0
ns
Data-in hold time
tDH 8
10
ns
Refresh period
tREF 64 64 ns
Write command set-up time
tWCS
0
0
ns
/CAS setup time (C-B-R refresh)
tCSR
5
5
ns
/CAS hold time (C-B-R refresh)
tCHR
10
10
ns
/RAS precharge to /CAS hold time
tRPC
5
5
ns
NOTES
1.An initial pause of 200µs is required after power-up followed by any 8 /RAS-only or /CAS-before-/RAS refresh cycles
before proper device operation is achieved.
2.VIH (min) and VIL (max) are reference levels for measuring timing of input signals. Transition times are measured between
VIH(min) and VIL(max) and are assumed to be 5ns for all inputs.
3.Measured with a load equivalent to 2TTL loads and 100pF
4.Operation within the tRCD(max) limit insures that tRAC(max) can be met. tRCD(max) is specified as a reference point only. If tRCD
is greater than the specified tRCD(max) limit, then access time is controlled exclusively by tCAC.
5.Assumes that tRCD ≥ tRCD(max)
6. tAR, tWCR, tDHR are referenced to tRAD(max)
7.This parameter defines the time at which the output achieves the open circuit condition and is not referenced to VOH
or VOL.
8. tWCS, tRWD, tCWD anf tAWD are non restrictive operating parameter.
They are included in the data sheet as electrical characteristic only. If tWCS ≥ tWCS(min) the cycle is an early write
cycle and the data out pin will remain high impedance for the duration of the cycle.
9. Either tRCH or tRRH must be satisfied for a read cycle.
10. These parameters are referenced to the /CAS leading edge in early write cycles and to the /W leading edge in read-
write cycles.
11. Operation within the tRAD(max) limit insures that tRAC(max) can be met. tRAD(max) is specified as a reference
point only. If tRAD is greater than the specified tRAD(max) limit. then access time is controlled by tAA.
AC CHARACTERISTICS
(
0
o
C
≤
TA
≤
70oC
,
Vcc
=
5V±10%)
URL:www.hbe.co.kr
REV.1.0 (August.2002)
-5-
HANBit Electronics Co.,Ltd.
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet HMD32M32M16G.PDF ] | |
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