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參數資料
| 型號： | MCM64E918 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 8M Bit synchronous late write fast static RAM(8M位同步遲寫快速靜態RAM) |
| 中文描述： | 晚8分位同步靜態隨機存儲器寫入速度（800萬位同步遲寫快速靜態內存） |
| 文件頁數： | 3/24頁 |
| 文件大小： | 503K |
| 代理商： | MCM64E918 |
MCM64E918
MCM64E836
3
MOTOROLA FAST SRAM
MCM64E918 x18 PIN DESCRIPTIONS
Pin Locations
Symbol
Type
Description
5B
B1
Input
Synchronous Function Control Input: B1 = 0 initiates a load new
address.
5K
B2
Input
Synchronous Function Control Input: B2 = 0 initiates a WRITE,
B2 = 1 initiates a READ.
5L
B3
Input
Synchronous Function Control Input: B3 = 0 initiates a double (or
burst) operation, B3 = 1 initiates a single operation.
5G
CK
Input
Address, data in, and control input register clock. Active high.
5H
CK
Input
Address, data in, and control input register clock. Active low.
2F
CQ
Output
Echo Clock Output: Active high.
8M
CQ
Output
Echo Clock Output: Active low.
2B, 9B, 1D, 8D, 7F, 9F, 1H, 3H, 8H,
2K, 7K, 9K, 1M, 3M, 2P, 9P, 1T, 8T
DQ
I/O
Synchronous data I/O.
5C
G
Input
Output Enable functionality not supported. Must be tied to VSS or
driven to
≤
VIL Max.
4L
LBO
Input
Linear Burst Order: This is a mode pin. It must be tied to VDD or VSS
before power up.
LBO = 1 selects interleaved mode.
LBO = 0 selects linear mode.
3A, 4A, 6A, 7A, 3B, 7B, 3C, 4C, 6C,
7C, 7D, 3P, 7P, 4R, 6R, 3T, 7T
SA
Input
Synchronous Address Inputs: Registered on the rising clock edge.
5R, 5T
SA1, SA0
Input
Synchronous burst counter preload address inputs: SA0 = LSB.
5U
TCK
Input
JTAG pin, test clock. If JTAG is not used, TCK must be tied to VSS
or VDD.
4U
TDI
Input
JTAG pin, Test Data In.
6U
TDO
Output
JTAG, Test Data Out.
3U
TMS
JTAG pin.
5A
ZQ
Input
Output impedance programming input.
5E, 5N
Vref
VDD
Supply
Input Reference: Provides reference voltage for input buffers.
5D, 4E, 6E, 4F, 5F, 6F, 4H, 6H, 4J, 5J,
6J, 4M, 5M, 6M, 4N, 6N, 5P, 3R, 7R
Supply
Core Power Supply: These pins act as thermal vias to PCB power
plane.
2A, 8A, 2C, 8C, 2E, 8E, 2G, 8G, 2J,
8J, 2L, 8L, 2N, 8N, 2R, 8R, 2U, 8U
VDDQ
Supply
Output Power Supply: Provides operating power for output buffers.
1A, 9A, 4B, 6B, 1C, 9C, 4D, 6D, 1E,
3E, 7E, 9E, 1G, 3G, 4G, 6G, 7G, 9G,
1J, 3J, 7J, 9J, 4K, 6K, 1L, 3L, 7L, 9L,
1N, 3N, 7N, 9N, 4P, 6P, 1R, 9R, 4T,
6T, 1U, 9U
VSS
Supply
Ground: These pins act as thermal vias to PCB ground plane.
1B, 8B, 2D, 3D, 9D, 1F, 3F, 8F, 2H,
7H, 9H, 1K, 3K, 8K, 6L, 2M, 7M, 9M,
1P, 8P, 2T, 9T, 7U
NC
—
No Connection: This means there is no connection to the chip.
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