参数资料
型号: DSP56F826BU80
厂商: Freescale Semiconductor
文件页数: 26/56页
文件大小: 0K
描述: IC DSP 80MHZ 64KB FLASH 100LQFP
标准包装: 90
系列: 56F8xx
核心处理器: 56800
芯体尺寸: 16-位
速度: 80MHz
连通性: EBI/EMI,SCI,SPI,SSI
外围设备: POR,WDT
输入/输出数: 46
程序存储器容量: 67KB(33.5K x 16)
程序存储器类型: 闪存
RAM 容量: 4.5K x 16
电压 - 电源 (Vcc/Vdd): 2.25 V ~ 2.75 V
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 100-LQFP
包装: 托盘
56F826 Technical Data, Rev. 14
32
Freescale Semiconductor
Input Data Hold to RD Deasserted
tDRD
0—
ns
RD Assertion Width
Wait states = 0
Wait states > 0
tRD
19
(T*WS) + 19
ns
Address Valid to Input Data Valid
Wait states = 0
Wait states > 0
tAD
1
(T*WS) + 1
ns
Address Valid to RD Asserted
tARDA
-4.4
ns
RD Asserted to Input Data Valid
Wait states = 0
Wait states > 0
tRDD
2.4
(T*WS) + 2.4
ns
WR Deasserted to RD Asserted
tWRRD
6.8
ns
RD Deasserted to RD Asserted
tRDRD
0—
ns
WR Deasserted to WR Asserted
tWRWR
14.1
ns
RD Deasserted to WR Asserted
tRDWR
12.8
ns
1. Timing is both wait state- and frequency-dependent. In the formulas listed, WS = the number of wait states and
T = Clock Period. For 80MHz operation, T = 12.5ns.
2. Parameters listed are guaranteed by design.
To calculate the required access time for an external memory for any frequency < 80Mhz, use this formula:
Top = Clock period @ desired operating frequency
WS = Number of wait states
Memory Access Time = (Top*WS) + (Top- 11.5)
Table 3-10 External Bus Asynchronous Timing1, 2 (Continued)
Operating Conditions: VSSIO = VSS = VSSA = 0V, VDDA = VDDIO = 3.0–3.6V, VDD = 2.25–2.75V, TA = –40° to +85°C, CL ≤ 50pF, fop = 80MHz
Characteristic
Symbol
Min
Max
Unit
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