CY7C1046BN Datasheet, PDF (1/9 Pages) Cypress Semiconductor – 1M x 4 Static RAM

CY7C1046BN
Features
• Low active power
— 825 mW (max)
• Low CMOS standby power
— 44 mW (max)
• 2.0V data retention (400 μW at 2.0V retention)
• Automatic power down when deselected
• TTL-compatible inputs and outputs
• Easy memory expansion with CE and OE features
• Available in non Pb-free 400 mil wide 32-pin SOJ package
Functional Description
The CY7C1046BN is a high performance CMOS static RAM
organized as 1,048,576 words by 4 bits. Easy memory
expansion is provided by an active LOW Chip Enable (CE), an
active LOW Output Enable (OE), and tri-state drivers.
1M x 4 Static RAM
You write to the device by taking Chip Enable (CE) and Write
Enable (WE) inputs LOW. Data on the four IO pins (IO₀
through IO₃) is then written into the location specified on the
address pins (A₀ through A₁₉).
You read from the device by taking Chip Enable (CE) and
Output Enable (OE) LOW while forcing Write Enable (WE)
HIGH. Under these conditions, the contents of the memory
location specified by the address pins appears on the IO pins.
The four input and output pins (IO₀ through IO₃) are placed in
a high impedance state when the device is deselected (CE
HIGH), the outputs are disabled (OE HIGH), or when the write
operation is active (CE LOW, and WE LOW).
The CY7C1046BN is available in a standard 400-mil-wide
32-pin SOJ package with center power and ground (revolu-
tionary) pinout.
Logic Block Diagram
Pin Configuration
SOJ
TOP VIEW
A₀
A₁
A₂
A₃
A₄
A₅
A₆
A₇
A₈
A₉
A₁₀
CE
WE
OE
INPUT BUFFER
1M x 4
ARRAY
COLUMN
DECODER
POWER
DOWN
IO ₀
IO ₁
IO ₂
IO ₃
1046B–1
A₀ 1
A_{1 2}
A₂ 3
A₃ 4
A_{4 5}
CE ₆
IO_{0 7}
V_CC 8
GND 9
IO₁ 10
WE 11
A₅ 12
A₆ 13
A₇ 14
A_{8 15}
A_{9 16}
32 _A19
31 A₁₈
30 _A17
29 _A16
28 A₁₅
27 _OE
26 IO₃
25 _GND
24 _VCC
23 IO₂
22 A₁₄
21 A₁₃
20 A₁₂
19 A₁₁
18 A₁₀
17 NC
1046B–2
Selection Guide
Maximum Access Time (ns)
Maximum Operating Current (mA)
Maximum CMOS Standby Current (mA)
7C1046BN-15
15
150
8
Cypress Semiconductor Corporation
Document #: 001-11924 Rev. **
• 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600
Revised November 30, 2006
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