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| 型號： | TWR-MECH |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 25/46頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT TOWER ROBOT SENSOR MOTOR |
| 視頻文件： | Freescale Tower Overview - Another Geek Moment Freescale Tower Labs 1 & 2 - Another Geek Moment |
| 設(shè)計資源： | Tower Mechanical Drawing |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | ColdFire® |
| 主要目的： | 機(jī)器人 |
| 嵌入式： | 是，MCU，32 位 |
| 已用 IC / 零件： | MCF52259，MMA8451Q，MPR121 |
| 主要屬性： | 32 位 MCU，3 軸加速傳感器，接觸式傳感器 |
| 已供物品： | 板 |
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MCF52259 ColdFire Microcontroller, Rev. 5
Electrical Characteristics
Freescale
31
2.8
Clock Source Electrical Specifications
Table 14. Oscillator and PLL Specifications
(VDD and VDDPLL = 3.0 to 3.6 V, VSS = VSSPLL = 0 V)
Characteristic
Symbol
Min
Max
Unit
Clock Source Frequency Range of EXTAL Frequency Range
Crystal
External1
1 In external clock mode, it is possible to run the chip directly from an external clock source without enabling the PLL.
fcrystal
fext
12
0
25.02
66.67 or 80
2 This value has been updated.
MHz
PLL reference frequency range
fref_pll
MHz
System frequency 3
External clock mode
On-chip PLL frequency
3 All internal registers retain data at 0 Hz.
fsys
0
fref / 32
66.67 or 804
4 Depending on packaging; see the orderable part number summary (Table 2).
MHz
Loss of reference frequency 5, 7
5 Loss of Reference Frequency is the reference frequency detected internally, which transitions the PLL into self clocked mode.
fLOR
100
1000
kHz
Self clocked mode frequency 6
6 Self clocked mode frequency is the frequency at which the PLL operates when the reference frequency falls below f
LOR with
default MFD/RFD settings.
fSCM
15
MHz
Crystal start-up time 7, 8
7 This parameter is characterized before qualification rather than 100% tested.
8 Proper PC board layout procedures must be followed to achieve specifications.
tcst
—0.1
ms
EXTAL input high voltage
External reference
VIHEXT
2.0
3.02
V
EXTAL input low voltage
External reference
VILEXT
VSS
0.8
V
PLL lock time4,9
9 This specification applies to the period required for the PLL to relock after changing the MFD frequency control bits in the
synthesizer control register (SYNCR).
tlpll
—500
s
Duty cycle of reference 4
tdc
40
60
% fref
Frequency un-LOCK range
fUL
–1.5
1.5
% fref
Frequency LOCK range
fLCK
–0.75
0.75
% fref
CLKOUT period jitter 4, 5, 10 ,11, measured at fSYS Max
Peak-to-peak (clock edge to clock edge)
Long term (averaged over 2 ms interval)
10 Jitter is the average deviation from the programmed frequency measured over the specified interval at maximum f
sys.
Measurements are made with the device powered by filtered supplies and clocked by a stable external clock signal. Noise
injected into the PLL circuitry via VDDPLL and VSSPLL and variation in crystal oscillator frequency increase the Cjitter percentage
for a given interval.
11 Based on slow system clock of 40 MHz measured at f
sys max.
Cjitter
—
10
.01
% fsys
On-chip oscillator frequency
foco
7.84
8.16
MHz
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TWR-MEM | 功能描述:存儲器 IC 開發(fā)工具 Memory Module for Tower RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Reference Boards 工具用于評估:M24LR64-R 存儲容量:64 kbit 存儲類型:EEPROM 工作電源電壓:1.8 V to 5.5 V |
| TWR-MEM | 制造商:Freescale Semiconductor 功能描述:TOWER SYSTEM - MEMORY CONTROLL |
| TWR-MEM-PISMO | 功能描述:存儲器 IC 開發(fā)工具 Tower Memory Pismo RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Reference Boards 工具用于評估:M24LR64-R 存儲容量:64 kbit 存儲類型:EEPROM 工作電源電壓:1.8 V to 5.5 V |
| TWR-METRO-KIT-EU | 功能描述:WiFi/802.11開發(fā)工具 TWR-METRO-KIT FOR EU RoHS:否 制造商:Roving Networks 產(chǎn)品:Evaluation Boards 工具用于評估:RN-171 支持協(xié)議:802.11 b/g 頻率:2.4 GHz 接口類型:UART 工作電源電壓:2 V to 16 V |
| TWR-METRO-KIT-JA | 功能描述:WiFi/802.11開發(fā)工具 TWR-METRO-KIT FOR JA RoHS:否 制造商:Roving Networks 產(chǎn)品:Evaluation Boards 工具用于評估:RN-171 支持協(xié)議:802.11 b/g 頻率:2.4 GHz 接口類型:UART 工作電源電壓:2 V to 16 V |
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