參數(shù)資料
型號： MCF51JE128CMB
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, FLASH, 50.33 MHz, MICROCONTROLLER, PBGA81
封裝： 10 X 10 MM, ROHS COMPLIANT, MAPBGA-81
文件頁數(shù)： 29/50頁
文件大?。?/td> 1200K
代理商： MCF51JE128CMB
Preliminary Electrical Characteristics
Freescale Semiconductor
1-3
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, 5
Low range, low gain (RANGE = 0,
HGO = 0)
t
CSTL
—
200
—
ms
Low range, high gain (RANGE =
0, HGO = 1)
—
400
—
High range, low gain (RANGE = 1,
HGO = 0)
tCSTH
—5
—
High range, high gain (RANGE =
1, HGO = 1)
—15
—
1
Data in Typical column was characterized at 3.0 V, 25
°C or is typical recommended value.
2
When MCG is configured for FEE or FBE mode, input clock source must be divisible using RDIV to within the range of 31.25 kHz to
39.0625 kHz.
3
See crystal or resonator manufacturer’s recommendation.
4
This parameter is characterized and not tested on each device.
5
Proper PC board layout procedures must be followed to achieve specifications.
Table 19. Mini-FlexBus AC Timing Specifications
Num
C
Characteristic
Min
Max
Unit
Notes
—
Frequency of Operation
—
25.1666
MHz
—
MB1
D
Clock Period
39.73
—
ns
—
MB2
T
Output Valid
—
20
ns
1
1 Specification is valid for all MB_A[19:0], MB_D[7:0], MB_CS[1:0], MB_OE, MB_R/W, and MB_ALE.
MB3
D
Output Hold
1.0
—
ns
1
MB4
T
Input Setup
22
—
ns
2
2 Specification is valid for all MB_D[7:0].
MB5
D
Input Hold
10
—
ns
2
Table 18. XOSC (Temperature Range = –40 to 105°C Ambient)
#
Characteristic
Symbol
Min
Typ1
Max
Unit
Preliminary — Subject to Change
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相關代理商/技術參數(shù)
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MCF51JE128VLL 制造商:Freescale Semiconductor 功能描述:128K FLASH-NON-ANALOG IP - Bulk
MCF51JE128VMB 功能描述:32位微控制器 - MCU 128k Flash Non-analog IP RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風格:SMD/SMT
MCF51JE256 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:An Energy-Efficient Solution from Freescale
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