參數(shù)資料
型號(hào): MCF52258CVN66J
廠商: Freescale Semiconductor
文件頁(yè)數(shù): 26/46頁(yè)
文件大?。?/td> 0K
描述: IC MCU 512KB FLASH 144MAPBGA
標(biāo)準(zhǔn)包裝: 160
系列: MCF5225x
核心處理器: Coldfire V2
芯體尺寸: 32-位
速度: 66MHz
連通性: CAN,EBI/EMI,以太網(wǎng),I²C,QSPI,UART/USART,USB OTG
外圍設(shè)備: DMA,LVD,POR,PWM,WDT
輸入/輸出數(shù): 96
程序存儲(chǔ)器容量: 512KB(512K x 8)
程序存儲(chǔ)器類(lèi)型: 閃存
RAM 容量: 64K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 144-LBGA
包裝: 托盤(pán)
Electrical Characteristics
MCF52259 ColdFire Microcontroller, Rev. 5
Freescale
32
2.9
USB Operation
2.10
Mini-FlexBus External Interface 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 80 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.
Table 15. USB Operation Specifications
Characteristic
Symbol
Value
Unit
Minimum core speed for USB operation
fsys_USB_min
16
MHz
Table 16. Mini-FlexBus AC Timing Specifications
Num
Characteristic
Min
Max
Unit
Notes
Frequency of Operation
80
MHz
MB1
Clock Period
12.5
ns
MB2
Output Valid
8
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
Output Hold
2
ns
MB4
Input Setup
6
ns
2
2 Specification is valid for all MB_D[7:0].
MB5
Input Hold
0
ns
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