HMD8M36M18G Datasheet, PDF (1/7 Pages) Hanbit Electronics Co.,Ltd – 32Mbyte(8Mx36) 72-pin FP with Parity MODE 2K Ref. SIMM Design 5V

HANBit
HMD8M36M18G
32Mbyte(8Mx36) 72-pin FP with Parity MODE 2K Ref. SIMM Design 5V
Part No. HMD8M36M18, HMD8M36M18G
GENERAL DESCRIPTION
The HMD8M36M18G is a 8M x 36bit dynamic RAM high density memory module. The module consists of sixteen
CMOS 4M x 4bit DRAM in 24-pin SOJ packages and two CMOS 4Mx 4bit Quad-CAS DRAM in 28pin SOJ packages
mounted on a 72-pin, double-sided, FR-4-printed circuit board. A 0.1 or 0.22uF 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
w Part Identification
HMD8M36M18---- 2048 Cycles/32ms Ref. Solder Lead
HMD8M36M18G-- 2048 Cycles/32ms Ref. Gold Lead
w Access times : 50, 60ns
w High-density 32MByte design
w Single + 5V ±0.5V power supply
w JEDEC standard PDpin and pinout
w Fast Page with Parity mode operation
w /CAS-before-/RAS refresh capability
w/RAS-only and Hidden refresh capability
w TTL compatible inputs and outputs
w FR4-PCB design
OPTIONS
MARKING
w Timing
50ns access
-5
60ns access
-6
w Packages
72-pin SIMM
M
PRESENCE DETECT PINS(Optional)
PIN ASSIGNMENT
PIN SYMBOL
PIN
SYMBOL
PIN
SYMBO
L
PIN
SYMBOL
1
Vss 19 A10
37 DQ17 55 DQ12
2 DQ0 20 DQ4 38 DQ35 56 DQ30
3 DQ18 21 DQ22 39 Vss 57 DQ13
4 DQ1 22 DQ5 40 /CAS0 58 DQ31
5 DQ19 23 DQ23 41 /CAS2 59 Vcc
6 DQ2 24 DQ6 42 /CAS3 60 DQ32
7 DQ20 25 DQ24 43 /CAS1 61 DQ14
8 DQ3 26 DQ7 44 /RAS0 62 DQ33
9 DQ21 27 DQ25 45 /RAS1 63 DQ15
10 Vcc 28
A7
46 NC 64 DQ34
11 NC
29
NC
47 /WE 65 DQ16
12
A0
30 Vcc
48 NC 66
NC
13 A1
31
A8
49 DQ9 67 PD1
14 A2
32
A9
50 DQ27 68 PD2
15
A3
33
NC
51 DQ10 69 PD3
16
A4
34
NC
52 DQ28 70 PD4
17
A5
35 DQ26 53 DQ11 71
NC
18
A6
36 DQ8 54 DQ29 72 Vss
Pin
50ns
PD1
NC
PD2
Vss
60ns
NC
Vss
SIMM
TOP VIEW
PD3
Vss
NC
PD4
Vss
NC
PERFORMANCE RANGE
Note: A11 is used for only 4K Ref.
Speed
5
6
tRAC
50ns
60ns
tCAC
13ns
15ns
tRC
90ns
110ns
URL:www.hbeoc.kr
REV.1.0 (August.2002)
-1-
HANBit Electronics Co.,Ltd.