參數(shù)資料
型號: DSP56855BUE
廠商: Freescale Semiconductor
文件頁數(shù): 21/52頁
文件大?。?/td> 0K
描述: IC DSP 16BIT 120MHZ 100-LQFP
標(biāo)準(zhǔn)包裝: 90
系列: 568xx
核心處理器: 56800E
芯體尺寸: 16-位
速度: 120MHz
連通性: EBI/EMI,SCI,SSI
外圍設(shè)備: DMA,POR,WDT
輸入/輸出數(shù): 18
程序存儲器容量: 48KB(24K x 16)
程序存儲器類型: SRAM
RAM 容量: 24K x 16
電壓 - 電源 (Vcc/Vdd): 1.62 V ~ 1.98 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-LQFP
包裝: 托盤
56855 Technical Data, Rev. 6
28
Freescale Semiconductor
4.7 Reset, Stop, Wait, Mode Select, and Interrupt Timing
Address Valid to RD Deasserted
tARDD
-2.07
1.00
RWSS,RWS
ns
Valid Input Data Hold after RD
Deasserted
tDRD
0.00
N/A1
ns
RD Assertion Width
tRD
-1.34
1.00
RWS
ns
Address Valid to Input Data Valid
tAD
-10.27
1.00
RWSS,RWS
ns
-13.5
1.19
Address Valid to RD Asserted
tARDA
- 0.94
0.00
RWSS
ns
RD Asserted to Input Data Valid
tRDD
-9.53
1.00
RWSS,RWS
ns
-12.64
1.19
WR Deasserted to RD Asserted
tWRRD
-0.75
0.25
WWSH,RWSS
ns
RD Deasserted to RD Asserted
tRDRD
-0.162
0.00
RWSS,RWSH
ns
WR Deasserted to WR Asserted
tWRWR
WWS=0
-0.44
0.75
WWSS, WWSH
ns
WWS>0
-0.11
1.00
RD Deasserted to WR Asserted
tRDWR
0.14
0.50
MDAR, BMDAR,
RWSH, WWSS
ns
-0.57
0.69
1. N/A since device captures data before it deasserts RD
2. If RWSS = RWSH = 0, RD does not deassert during back-to-back reads and D=0.00 should be used.
Table 1. Reset, Stop, Wait, Mode Select, and Interrupt Timing1, 2
Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, fop = 120MHz
Characteristic
Symbol
Min
Max
Unit
See Figure
RESET Assertion to Address, Data and Control
Signals High Impedance
tRAZ
—11
ns
Minimum RESET Assertion Duration3
tRA
30
ns
RESET Deassertion to First External Address Output
tRDA
120T
ns
Edge-sensitive Interrupt Request Width
tIRW
1T + 3
ns
Table 4-7 External Memory Interface Timing (Continued)
Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98 V, VDDIO = VDDA = 3.0–3.6V, TA = –40× to +120×C, CL 50pF, P = 8.333ns
Characteristic
Symbol
Wait States
Configuration
DM
Wait States
Controls
Unit
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