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參數(shù)資料
型號(hào): DSP56857BUE
廠商: Freescale Semiconductor
文件頁數(shù): 37/53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: SCI,SPI,SSI
外圍設(shè)備: DMA,POR,WDT
輸入/輸出數(shù): 47
程序存儲(chǔ)器容量: 80KB(40K x 16)
程序存儲(chǔ)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
56857 Technical Data, Rev. 6
42
Freescale Semiconductor
Figure 4-28 RXD Pulse Width
Figure 4-29 TXD Pulse Width
4.12 JTAG Timing
Table 4-14 JTAG Timing1, 3
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
1.
Timing is both wait state and frequency dependent. For the values listed, T = clock cycle. For 120MHz
operation, T = 8.33ns.
Characteristic
Symbol
Min
Max
Unit
TCK frequency of operation2
2.
TCK frequency of operation must be less than 1/4 the processor rate.
3.
Parameters listed are guaranteed by design.
fOP
DC
30
MHz
TCK cycle time
tCY
33.3
ns
TCK clock pulse width
tPW
16.6
ns
TMS, TDI data setup time
tDS
3—
ns
TMS, TDI data hold time
tDH
3—
ns
TCK low to TDO data valid
tDV
—12
ns
TCK low to TDO tri-state
tTS
—10
ns
TRST assertion time
tTRST
35
ns
DE assertion time
tDE
4T
ns
RXD
SCI receive
data pin
(Input)
RXDPW
TXD
SCI receive
data pin
(Input)
TXDPW
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