Cypress manual CY7C107BN CY7C1007BN, Features, Functional Description, Logic Block Diagram

Features

•High speed

— tAA = 15 ns

•CMOS for optimum speed/power

•Automatic power-down when deselected

•TTL-compatible inputs and outputs

CY7C107BN

CY7C1007BN

1M x 1 Static RAM

Functional Description

The CY7C107BN and CY7C1007BN are high-performance CMOS static RAMs organized as 1,048,576 words by 1 bit. Easy memory expansion is provided by an active LOW Chip Enable (CE) and three-state drivers. These devices have an automatic power-down feature that reduces power consumption by more than 65% when deselected.

Writing to the devices is accomplished by taking Chip Enable (CE) and Write Enable (WE) inputs LOW. Data on the input pin (DIN) is written into the memory location specified on the address pins (A0 through A19).

Reading from the devices is accomplished by taking Chip Enable (CE) LOW while Write Enable (WE) remains HIGH. Under these conditions, the contents of the memory location specified by the address pins will appear on the data output (DOUT) pin.

The output pin (DOUT) is placed in a high-impedance state when the device is deselected (CE HIGH) or during a write operation (CE and WE LOW).

The CY7C107BN is available in a standard 400-mil-wide SOJ; the CY7C1007BN is available in a standard 300-mil-wide SOJ

Logic Block Diagram
										DIN
A0			INPUT BUFFER
	DECODERROW								AMPSSENSE
A7
A1
A2
A3
A4			512 x 2048
A5				ARRAY						DOUT
A6
A8
			COLUMN						POWER
									DOWN	CE
			DECODER
	9	10 11	12 13	14	15	16	17 18	19		WE
	A
	A A A A A A A A A A

Pin Configuration

		SOJ
	Top View
A10	1	28	VCC
A11	2	27	A
A12	3	26	A9
A13	4	25	A8
A14		24	7
	5		A6
		23
A15	6		A5
		22
NC	7		A4
		21
A16	8		NC
		20
A17	9		A3
		19
A	10		A
A18	11	18	A2
DOUT19	12	17	A01
WE	13	16	DIN
GND	14	15	CE

Selection Guide

		7C107BN-15
		7C1007BN-15
Maximum Access Time (ns)		15
Maximum Operating Current (mA)		80
Maximum CMOS Standby Current ISB2 (mA)		2
Cypress Semiconductor Corporation •	198 Champion Court • San Jose, CA 95134-1709		• 408-943-2600
Document #: 001-06426 Rev. **		Revised February 1, 2006

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