參數資料
型號: MC56F8156VFVE
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 數字信號處理
英文描述: 16-BIT, 120 MHz, OTHER DSP, PQFP144
封裝: ROHS COMPLIANT, LQFP-144
文件頁數: 55/178頁
文件大?。?/td> 910K
代理商: MC56F8156VFVE
56F8356 Technical Data, Rev. 13
148
Freescale Semiconductor
Preliminary
When using the XTAL clock input directly as the chip clock without prescaling (ZSRC selects prescaler
clock and prescaler set to ÷ 1), the EMI quadrature clock is generated using both edges of the EXTAL
clock input. In this situation only, parameter values must be adjusted for the duty cycle at XTAL.
DCAOE and DCAEO are used to make this duty cycle adjustment where needed.
DCAOE and DCAEO are calculated as follows:
The timing of write cycles is different when WWS = 0 than when WWS > 0. Therefore, some parameters
contain two sets of numbers to account for this difference. Use the “Wait States Configuration” column
of Table 10-16 to make the appropriate selection.
Figure 10-4 External Memory Interface Timing
DCAOE =
=
0.5 - MAX XTAL duty cycle, if ZSRC selects prescaler clock and the prescaler is set to
÷ 1
0.0 all other cases
DCAEO =
=
MIN XTAL duty cycle - 0.5, if ZSRC selects prescaler clock and the prescaler is set to
÷ 1
0.0 all other cases
Example of DCAOE and DCAEO calculation
Assuming prescaler is set for
÷ 1 and prescaler clock is selected by ZSRC, if XTAL duty cycle
ranges between 45% and 60% high:
DCAOE = .50 - .60 = - 0.1
DCAEO = .45 - .50 = - 0.05
tDRD
tRDD
tAD
tDOH
tDOS
tDWR
tRDWR
tWAC
tWRRD
tWR
tAWR
tWRWR
tARDD
tRDA
tRDRD
tRD
tARDA
Data Out
Data In
A0-Axx,CS
RD
WR
D0-D15
Note: During read-modify-write instructions and internal instructions, the address lines do not change state.
相關PDF資料
PDF描述
MC56F8356MFVE 16-BIT, 120 MHz, OTHER DSP, PQFP144
MC56F8357MPY60 16-BIT, 120 MHz, OTHER DSP, PQFP160
MC56F8365VFGE 4-BIT, 120 MHz, OTHER DSP, PQFP128
MC56F8365MFGE 4-BIT, 120 MHz, OTHER DSP, PQFP128
MC68000L12 16-BIT, 12.5 MHz, MICROPROCESSOR, CDIP64
相關代理商/技術參數
參數描述
MC56F8157 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-BIT HYBRID CONTROLLERS
MC56F8157VPY 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC56F8157VPYE 功能描述:數字信號處理器和控制器 - DSP, DSC 16 BIT HYBRID CONTROLLER RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
MC56F8157VVFE 功能描述:IC DGTL SIGNAL CTLR 160-MAPBGA RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:56F8xxx 標準包裝:1 系列:87C 核心處理器:MCS 51 芯體尺寸:8-位 速度:16MHz 連通性:SIO 外圍設備:- 輸入/輸出數:32 程序存儲器容量:8KB(8K x 8) 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4 V ~ 6 V 數據轉換器:- 振蕩器型:外部 工作溫度:0°C ~ 70°C 封裝/外殼:44-DIP 包裝:管件 其它名稱:864285
MC56F8165 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers