參數(shù)資料
型號(hào): DSP56F802TA80E
廠商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述: 16-bit Digital Signal Controllers
中文描述: 16位數(shù)字信號(hào)控制器
文件頁(yè)數(shù): 18/40頁(yè)
文件大?。?/td> 2472K
代理商: DSP56F802TA80E
Reset, Stop, Wait, Mode Select, and Interrupt Timing
56F802 Technical Data, Rev. 7
Freescale Semiconductor
25
3.5.2
Phase Locked Loop Timing
3.6 Reset, Stop, Wait, Mode Select, and Interrupt Timing
Table 3-9 PLL Timing
Characteristic
Symbol
Min
Typ
Max
Unit
Frequency for the PLL1
1. An externally supplied reference clock should be as free as possible from any phase jitter for the PLL to work
correctly. The PLL is optimized for 8MHz input crystal.
2. ZCLK may not exceed 80MHz. For additional information on ZCLK and fout/2, please refer to the OCCS chapter in the
User Manual. ZCLK = fop
3.
Will not exceed 60MHz for the DSP56F802TA60 device.
4. This is the minimum time required after the PLL setup is changed to ensure reliable operation.
fosc
4
8
10
MHz
PLL output frequency2
fout/2
40
803
MHz
PLL stabilization time4 0o to +85oC
tplls
10
ms
PLL stabilization time4 -40o to 0oC
tplls
100
200
ms
Table 3-10 Reset, Stop, Wait, Mode Select, and Interrupt Timing1, 3
Operating Conditions: VSS = VSSA = 0 V, VDD = VDDA = 3.0–3.6 V, TA = –40° to +85°C, CL 50pF
1. In the formulas, T = clock cycle. For an operating frequency of 80MHz, T = 12.5ns.
Characteristic
Symbol
Min
Max
Unit
RESET Assertion to Address, Data and Control Signals High
Impedance
tRAZ
21
ns
Minimum RESET Assertion Duration2
OMR Bit 6 = 0
OMR Bit 6 = 1
2. Circuit stabilization delay is required during reset when using an external clock or crystal oscillator in two cases:
After power-on reset
When recovering from Stop state
3. Parameters listed are guaranteed by design.
tRA
275,000T
128T
ns
RESET De-assertion to First External Address Output
tRDA
33T
34T
ns
Edge-sensitive Interrupt Request Width
tIRW
1.5T
ns
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