HMD1M1Z1 Datasheet, PDF (1/6 Pages) Hanbit Electronics Co.,Ltd – 1Mbit(1Mx1bit) Fast Page Mode, 1K Refresh, 20Pin ZIP, 5V Design

HANBit
HMD1M1Z1
1Mbit(1Mx1bit) Fast Page Mode, 1K Refresh, 20Pin ZIP, 5V Design
Part No. HMD1M1Z1
DESCRIPTION
The HMD1M1Z1 is an 1M x 1 bits Fast Page Mode CMOS DRAMs. Fast Page Mode offers high speed random access of
memory cells
within the same row. Power supply voltage (+5V ), access time (-5, -6), power consumption(Normal or Low power), and package
type (ZIP) are optional features of this Module. The HMD1M1Z1 have CAS-before-RAS refresh, RAS-only refresh and Hidden
refresh capabilities.
The HMD1M1Z1 is optimized for application to the systems, which are required high density and large capacity such as main
memory for main frames and mini computers, personal computer and high performance microprocessor systems.
The HMD1M1Z1 provides common data and outputs.
Features
PIN ASSIGNMENT
w Fast Page Mode operation
w CAS-before-RAS refresh capability
w RAS-only and Hidden refresh capability
w Fast parallel test mode capability
w TTL(5V) compatible inputs and outputs
w Early write or output enable controlled write
w Available in 20pin ZIP packages
w Single +5V± 10% power supply
w 1,024 Refresh Cycles/16ms
w Performance Range
Speed
t_RAC
t_CAC
t_RC
t_PC
HMD1M1Z1-5
50
15
90
35
HMD1M1Z1-6
60
15
110
40
PIN DESCRIPTION
PIN
A0 – A8
FUNCTION
Address Inputs
PIN
FUNCTION
/WE
Read/Write
Enable
DQ0 –
Data
Input/Output
Vcc
DQ3
Power
(+5V)
/RAS
Row Address
Strobe
Vss
Ground
/CAS
Column
Address Strobe
NC
No
Connection
PIN
SYMBOL
1
NC
2
/CAS
3
DOUT
4
V_SS
5
DIN
6
/WE
7
/RAS
8
NC
9
NC
10
A9NC
11
A0
12
A1
13
A2
14
A3
15
V_CC
16
A4
17
A5
18
A6
19
A7
20
A8
1
HANBit Electronics Co.,Ltd.