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| 型號： | TWR-MCF51MM |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 33/57頁 |
| 文件大?。?/td> | 0K |
| 描述： | TOWER SYSTEM BOARD MCF51MM |
| 設(shè)計資源： | TWR-MCF51MM Schematic |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | ColdFire®, Flexis™ |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | Freescale 電源塔系統(tǒng)，MCF51MM |
| 所含物品： | 板 |
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Electrical Characteristics
Freescale Semiconductor
39
o
3.11 Mini-FlexBus Timing Specifications
A multi-function external bus interface called Mini-FlexBus is provided with basic functionality to
interface to slave-only devices up to a maximum bus frequency of 25.1666 MHz. It can be directly connected
to asynchronous or synchronous devices such as external boot ROMs, flash memories, gate-array logic, or
other simple target (slave) devices with little or no additional circuitry. For asynchronous devices a simple
chip-select based interface can be used.
All processor bus timings are synchronous; that is, input setup/hold and output delay are given in respect
to the rising edge of a reference clock, MB_CLK. The MB_CLK frequency is half the internal system bus
frequency.
The following timing numbers indicate when data is latched or driven onto the external bus, relative to the
Mini-FlexBus output clock (MB_CLK). All other timing relationships can be derived from these values.
6 Crystal start-up time 4
Low range, low gain (RANGE =
0, HGO = 0)
t
CSTL-LP
—
200
—
ms
D
Low range, high gain
(RANGE = 0, HGO = 1)
t
CSTL-HG
O
—400
—
D
High range, low gain
(RANGE = 1, HGO = 0)5
tCSTH-LP
—5
—
D
High range, high gain
(RANGE = 1, HGO = 1)5
tCSTH-HG
O
—15
—
D
1 Data in Typical column was characterized at 3.0 V, 25C or is typical recommended value.
2 When MCG is configured for FEE or FBE mode, input clock source must bedivisible using RDIV to within the range of 31.25 kHz to 39.0625 kHz.
3 When MCG is configured for PEE or PBE mode, input clock source must be divisible using RDIV to within the range of 1 MHz to 2 MHz.
4 This parameter is characterized and not tested on each device. Proper PC board layout porcedures must be followed to achieve specifications.
5 4 MHz crystal.
Table 19. XOSC (Temperature Range = –40 to 105°C Ambient) (continued)
#
Characteristic
Symbol
Min
Typ1
Max
Unit
C
MCU
EXTAL
XTAL
RS
C2
Crystal or Resonator
RF
C1
MCF51MM256/128, Rev. 5
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TWR-MCF51MM-KIT | 功能描述:開發(fā)板和工具包 - COLDFIRE KIT MCU BD FSL TOWER RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Kits 工具用于評估:MCF53017 核心:ColdFire V3 接口類型:Ethernet, UART, USB 工作電源電壓:12 V |
| TWR-MCF51QM | 功能描述:開發(fā)板和工具包 - COLDFIRE MCF51JF Tower Module RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Kits 工具用于評估:MCF53017 核心:ColdFire V3 接口類型:Ethernet, UART, USB 工作電源電壓:12 V |
| TWR-MCF51QM-KIT | 功能描述:開發(fā)板和工具包 - COLDFIRE MCF51QM Tower Kit RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Kits 工具用于評估:MCF53017 核心:ColdFire V3 接口類型:Ethernet, UART, USB 工作電源電壓:12 V |
| TWR-MCF5225X | 功能描述:開發(fā)板和工具包 - COLDFIRE Kirin3 MCU Story Board RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Kits 工具用于評估:MCF53017 核心:ColdFire V3 接口類型:Ethernet, UART, USB 工作電源電壓:12 V |
| TWR-MCF5225X | 制造商:Freescale Semiconductor 功能描述:Tower System 32-bit MCF52 V2 M |
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