參數(shù)資料
型號(hào): ADSP-2185MBSTZ-266
廠商: Analog Devices Inc
文件頁(yè)數(shù): 15/40頁(yè)
文件大小: 0K
描述: IC DSP CONTROLLER 16BIT 100-LQFP
標(biāo)準(zhǔn)包裝: 1
系列: ADSP-21xx
類型: 定點(diǎn)
接口: 主機(jī)接口,串行端口
時(shí)鐘速率: 66MHz
非易失內(nèi)存: 外部
芯片上RAM: 80kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 2.50V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 100-LQFP
供應(yīng)商設(shè)備封裝: 100-LQFP(14x14)
包裝: 托盤
其它名稱: ADSP-2185MBSTZ266
ADSP-2185MBSTZ266-ND
REV. 0
–22–
ADSP-2185M
TEST CONDITIONS
Output Disable Time
Output pins are considered to be disabled when they have stopped
driving and started a transition from the measured output high
or low voltage to a high impedance state. The output disable
time (tDIS) is the difference of tMEASURED and tDECAY, as shown
in the Output Enable/Disable diagram. The time is the interval
from when a reference signal reaches a high or low voltage level
to when the output voltages have changed by 0.5 V from the
measured output high or low voltage.
The decay time, tDECAY, is dependent on the capacitive load,
CL, and the current load, iL, on the output pin. It can be
approximated by the following equation:
t
C
i
DECAY
L
=
× 05
. V
from which
t
DIS = tMEASURED – tDECAY
is calculated. If multiple pins (such as the data bus) are disabled,
the measurement value is that of the last pin to stop driving.
1.5V
OUTPUT
INPUT
1.5V
2.0V
0.8V
Figure 18. Voltage Reference Levels for AC Measure-
ments (Except Output Enable/Disable)
Output Enable Time
Output pins are considered to be enabled when they have made
a transition from a high-impedance state to when they start driving.
The output enable time (tENA) is the interval from when a refer-
ence signal reaches a high or low voltage level to when the output
has reached a specified high or low trip point, as shown Figure
19. If multiple pins (such as the data bus) are enabled, the mea-
surement value is that of the first pin to start driving.
2.0V
1.0V
tENA
REFERENCE
SIGNAL
OUTPUT
tDECAY
VOH
(MEASURED)
OUTPUT STOPS
DRIVING
OUTPUT
STARTS
DRIVING
tDIS
tMEASURED
VOL
(MEASURED)
VOH (MEASURED) – 0.5V
VOL (MEASURED) +0.5V
HIGH-IMPEDANCE STATE. TEST CONDITIONS CAUSE
THIS VOLTAGE LEVEL TO BE APPROXIMATELY 1.5V.
VOH
(MEASURED)
VOL
(MEASURED)
Figure 19. Output Enable/Disable
TO
OUTPUT
PIN
50pF
1.5V
IOH
IOL
Figure 20. Equivalent Loading for AC Measurements
(Including All Fixtures)
相關(guān)PDF資料
PDF描述
VI-B7Y-CY-F2 CONVERTER MOD DC/DC 3.3V 33W
ASC35DRTI CONN EDGECARD 70POS .100 DIP SLD
AYM28DRST CONN EDGECARD 56POS DIP .156 SLD
VE-20H-CY-F2 CONVERTER MOD DC/DC 52V 50W
XC95144XL-7TQ144I IC CPLD 144MCELL 7.5NS 144TQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADSP-2185MKCA-300 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 75MHz 75MIPS 144-Pin Mini-BGA
ADSP-2185MKCAZ-300 功能描述:IC DSP CONTROLLER 16BIT 144MBGA RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP(數(shù)字式信號(hào)處理器) 系列:ADSP-21xx 標(biāo)準(zhǔn)包裝:2 系列:StarCore 類型:SC140 內(nèi)核 接口:DSI,以太網(wǎng),RS-232 時(shí)鐘速率:400MHz 非易失內(nèi)存:外部 芯片上RAM:1.436MB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:-40°C ~ 105°C 安裝類型:表面貼裝 封裝/外殼:431-BFBGA,F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:431-FCPBGA(20x20) 包裝:托盤
ADSP-2185MKST-133X 制造商:Analog Devices 功能描述:
ADSP-2185MKST-300 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 75MHz 75MIPS 100-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:75MHZ,16BITDSP, 16K/16K, 2.5V, LQFP - Bulk 制造商:Analog Devices 功能描述:IC MICROCOMPUTER 16-BIT
ADSP-2185MKST-300R 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: