參數(shù)資料
型號(hào): ADSP-21469KBCZ-4
廠商: Analog Devices Inc
文件頁(yè)數(shù): 55/72頁(yè)
文件大?。?/td> 0K
描述: IC DSP 32/40BIT 450MHZ 324BGA
產(chǎn)品變化通告: Pin Function Change 08/Mar/2012
標(biāo)準(zhǔn)包裝: 1
系列: SHARC®
類型: 浮點(diǎn)
接口: DAI,DPI,EBI/EMI,I²C,SCI,SPI,SSP,UART/USART
時(shí)鐘速率: 450MHz
非易失內(nèi)存: 外部
芯片上RAM: 5Mb
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.10V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 324-BGA,CSPBGA
供應(yīng)商設(shè)備封裝: 324-CSPBGA
包裝: 托盤
ADSP-21469
Rev. 0
|
Page 59 of 72
|
June 2010
CAPACITIVE LOADING
Output delays and holds are based on standard capacitive loads:
30 pF on all pins (see Table 55). Figure 52 through Figure 57
show graphically how output delays and holds vary with load
capacitance. The graphs of Figure 48 through Figure 57 may not
be linear outside the ranges shown for Typical Output Delay vs.
Load Capacitance and Typical Output Rise Time (20% to 80%,
V = Min) vs. Load Capacitance.
Figure 47. Output Buffer Characteristics (Worst-Case DDR2)
Figure 48. Typical Output Rise/Fall Time Non-DDR2
(20% to 80%, VDD_EXT = Max)
SWEEP (V
DDEXT) VOLTAGE (V)
0
30
50
SOURCE
(V
DDEXT
)CURRENT
(mA)
40
20
-50
V
OH 3.13 V, 125 °C
V
OL 3.13 V, 125 °C
10
-30
-40
-20
-10
1.5
0.5
1.0
TYPE C & D, HALF DRIVE
TYPE C & D, FULL DRIVE
TYPE C & D, HALF DRIVE
TYPE C & D, FULL DRIVE
LOAD CAPACITANCE (pF)
6
0
7
4
2
1
3
RISE
AND
FALL
TIMES
(ns)
125
200
100
25
175
50
75
150
5
y = 0.0342x + 0.309
y = 0.0153x + 0.2131
y = 0.0413x + 0.2651
y = 0.0152x + 0.1882
TYPE A DRIVE FALL
TYPE A DRIVE RISE
TYPE B DRIVE FALL
TYPE B DRIVE RISE
Figure 49. Typical Output Rise/Fall Time Non-DDR2
(20% to 80%, VDD_EXT = Min)
Figure 50. Typical Output Rise/Fall Time DDR2
(20% to 80%, VDD_EXT = Max)
LOAD CAPACITANCE (pF)
6
0
10
4
2
RISE
AND
FALL
TIMES
(ns)
25
200
150
50
75
100
125
175
y = 0.0746x + 0.5146
y = 0.0572x + 0.5571
y = 0.0278x + 0.3138
y = 0.0258x + 0.3684
TYPE A FALL
TYPE A RISE
TYPE B RISE
TYPE B FALL
8
12
14
LOAD CAPACITANCE (pF)
0.6
0
0.7
0.4
0.2
0.1
0.3
RISE
AND
FALL
TIMES
(ns)
0.5
y = 0.0058x + 0.2113
y = 0.0217x + 0.26
y = 0.0198x + 0.2304
y = 0.0061x + 0.207
05
40
30
10
15
20
25
35
TYPE C & D HALF DRIVE FALL
0.8
0.9
1.0
TYPE C & D HALF DRIVE RISE
TYPE C & D FULL DRIVE RISE
TYPE C & D FULL DRIVE FALL
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