HM53051 Series
262,144-word × 4-bit Frame Memory
HM53051P is a 262,144-word × 4-bit frame
memory, using the most advanced 1.3 µm CMOS
processes. It performs serial access by an internal
address generator, and offers a fast cycle time of 34
ns, 45 ns, or 60 ns (min). Input and output data can
be written or read in any cycle, synchronized with
a system clock. The delay between data read/write
operations is variable. Y/C separation and frozen
pictures can be attained easily in 8 fsc NTSC
digital TV or VCR systems. HM53051 features
random access in 32-word × 4-bit data blocks. This
function allows picture-in-picture or a multiplexed
picture to be displayed with ease.
Pin Arrangement
HM53051P Series
Ordering Information
Type No.
Cycle Time
Package
HM53051P-34
34 ns
HM53051P-45
45 ns
300-mil, 18-pin
plastic DIP
HM53051P-60
18
VSS
Dout3
2
17
Dout1
OE
3
16
Dout0
TAS
4
15
SAD
CLK
5
14
SAS
CGW
6
13
CGR
7
12
WE
Din2
• 262,144-word × 4-bit serial access memory
• Dual ports
— Serial input: 4-bit
— Serial output: 4-bit
• High speed
— Read/write cycle time: 34/45/60 ns (min)
— Access time: 30/35/40 ns (max)
• Semi-synchronous read/write cycle
• Low power
— Active HM53051-34: 225 mW (typ)
HM53051-45/60: 200 mW (typ)
• Random access in 32-word × 4-bit blocks
• No external refresh control required
1
Din3
Features
Dout2
8
11
Din0
VCC
9
10
Din1
(Top view)
HM53051FP Series
Dout2
Dout3
OE
TAS
NC
NC
NC
NC
NC
CLK
CGW
Din3
Din2
VCC
1
28
27
2
3
26
4
25
24
5
6
23
7
22
8
21
9
20
19
10
18
11
17
12
13
16
14
15
(Top view)
VSS
Dout1
Dout0
SAD
NC
NC
NC
NC
NC
SAS
CGR
WE
Din0
Din1
60 ns
HM53051FP-34 34 ns
HM53051FP-45 45 ns
28-pin
plastic SOP
HM53051FP-60 60 ns
1
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