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參數(shù)資料
| 型號： | MCM69L738A |
| 廠商： | Motorola, Inc. |
| 英文描述： | 4M Late Write 2.5 V I/O |
| 中文描述： | 4分后寫入2.5六/輸出 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大小： | 212K |
| 代理商： | MCM69L738A |
MCM69L738A
MCM69L820A
12
MOTOROLA FAST SRAM
SERIAL BOUNDARY SCAN TEST ACCESS PORT OPERATION
OVERVIEW
The serial boundary scan test access port (TAP) on this
RAM is designed to operate in a manner consistent with
IEEE Standard 1149.1–1990 (commonly referred to as
JTAG), but does not implement all of the functions required
for 1149.1 compliance. Certain functions have been modified
or eliminated because their implementation places extra de-
lays in the RAMs critical speed path. Nevertheless, the RAM
supports the standard TAP controller architecture. (The TAP
controller is the state machine that controls the TAPs opera-
tion) and can be expected to function in a manner that does
not conflict with the operation of devices with Standard
1149.1 compliant TAPs. The TAP operates using conven-
tional JEDEC Standard 8–1B Low Voltage (3.3 V) TTL/
CMOS logic level signaling.
DISABLING THE TEST ACCESS PORT
It is possible to use this device without utilizing the TAP. To
disable the TAP Controller without interfering with normal
operation of the device, TCK must be tied to VSS to preclude
mid level inputs. TDI and TMS are designed so an undriven
input will produce a response identical to the application of a
logic 1, and may be left unconnected. But they may also be
tied to VDD through a 1 k resistor. TDO should be left uncon-
nected.
TAP DC OPERATING CHARACTERISTICS
(0
°
C
≤
TA
≤
70
°
C, Unless Otherwise Noted)
Parameter
Symbol
Min
Max
Unit
Note
Logic Input Logic High
VIH1
VIL1
Ilkg
VOL1
VOH1
VOL2
VOH2
2.0
VDD + 0.3
0.8
V
Logic Input Logic Low
– 0.3
V
Logic Input Leakage Current
—
±
5
μ
A
1
CMOS Output Logic Low
—
0.2
V
2
CMOS Output Logic High
VDD – 0.2
—
—
V
3
TTL Output Logic Low
0.4
V
4
TTL Output Logic High
2.4
—
V
5
NOTES:
1. 0 V
≤
Vin
≤
VDDQ for all logic input pins.
2. IOL1
≤
100
μ
A @ VOL = 0.2 V. Sampled, not 100% tested.
3.
IOH1
≤
100
μ
A @ VDDQ – 0.2 V. Sampled, not 100% tested.
4. IOL2
≤
8 mA @ VOL = 0.4 V.
5.
IOH2
≤
8 mA @ VOH = 2.4 V.
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相關(guān)代理商/技術(shù)參數(shù) |
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| MCM69L738AZP8.5 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:4M Late Write 2.5 V I/O |
| MCM69L738AZP8.5R | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:4M Late Write 2.5 V I/O |
| MCM69L738AZP9 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:4M Late Write 2.5 V I/O |
| MCM69L738AZP9.5 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:4M Late Write 2.5 V I/O |
| MCM69L738AZP9.5R | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:4M Late Write 2.5 V I/O |
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