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参数资料
| 型号： | M5253DEMO |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 5/14页 |
| 文件大小： | 0K |
| 描述： | DEMO BOARD FOR MCF5253 |
| 标准包装： | 1 |
| 系列： | ColdFire® |
| 类型： | MCU |
| 适用于相关产品： | MCF5253 |
| 所含物品： | 板 |
Hardware Submodules
…
MCF_CLOCK_PLLCONFIG = 0x1243E054;
MCF_CLOCK_PLLCONFIG = 0x1243E055;
/* Wait for PLL to lock */
while (!(MCF_CLOCK_PLLCONFIG & MCF_CLOCK_PLLCONFIG_LOCK))
;
…
Audio module also uses the 11.2896 MHz frequency for operation, so Faudio = AUDIOCLK = CRIN
(A20/A24 switch pull up, down).
3.4
Booting and Programming the Flash/EEPROM Memory
This demo board includes both a serial boot EEPROM and the program flash memories on-board.
3.4.1
Serial Boot EEPROM
The serial boot EEPROM (AT24C256) can store configuration parameters and the boot code. It is I 2 C bus
EEPROM and the address is 1010000x (x means R/W#-bit).
When the MCF5253 boot mode is configured as I 2 C master boot (A23 pull down and GPIO50 = 0,
GPIO49 = 0, GPIO48 = 0) the MCF5253 loads the boot code from the I 2 C EEPROM at powerup. The
board uses this EEPROM just for a demonstration of the MCF5253’s serial-boot function. There is no
pre-flashed software inside the EEPROM. Customer can put his own boot code there and configure the
data into this device. Please see Table 4 for more details about the serial-boot configuration.
3.4.2
Flash
A 8 MB (4Mx16) flash (SST39VF6401) memory resides on the CS0 space of the FlexBus memory on the
demo board. The software must configure the memory-access parameters to be consistent with the
hardware configuration. The SST39VF6401 is uniformed as 2 Kword sectors, totally in 2 K sectors.
When the MCF5253 boot mode is configured as CS0/CS4 boot (A23 pullup), the CPU loads the code from
the flash at powerup. We intended to reside the dBUG or U-boot as the bootloader at the beginning of the
flash memory.
Flash address
0xFF80_0000 ~ 0xFFFF_FFFF
The CS0 initialization code is below:
…
; CS0 = Flash SST39VF6401B - 8Mbytes
writemem.w 0x10000080 0xFF80 ; CSAR0 - FlashBase = 0xFF80_0000 - 0xFFFF_FFFF
writemem.w 0x1000008A 0x0D80 ; CSCR0
writemem.l 0x10000084 0x007F0021 ; CSMR0 - 0xFF80_0000 - 0xFFFF_FFFF
…
M5253 Demo Board User Manual, Rev. 0
Freescale Semiconductor
5
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| M5253EVB | 功能描述:开发板和工具包 - COLDFIRE MCF5253VM140 EVAL BOARD RoHS:否 制造商:Freescale Semiconductor 产品:Development Kits 工具用于评估:MCF53017 核心:ColdFire V3 接口类型:Ethernet, UART, USB 工作电源电压:12 V |
| M5253EVBE | 功能描述:开发板和工具包 - 其他处理器 MCF5253VM140 EVAL RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压: |
| M5254-000002-020BG | 功能描述:Pressure Sensor 290.08 PSI (2000 kPa) Vented Gauge Male - 1/4" (6.35mm) BSPP 4 mA ~ 20 mA Cylinder 制造商:te connectivity measurement specialties 系列:M52 零件状态:有效 压力类型:排气式压力计 工作压力:290.08 PSI（2000 kPa） 输出类型:模拟电流 输出:4 mA ~ 20 mA 精度:±0.25% 电压 - 电源:9 V ~ 30 V 端口尺寸:公型 - 1/4"（6.35mm） BSPP 端口样式:有螺纹 特性:温度补偿 端子类型:连接器 最高压力:580.15 PSI（4000 kPa） 工作温度:-40°C ~ 125°C 封装/外壳:圆柱型 供应商器件封装:- 标准包装:1 |
| M5254-000002-070BG | 功能描述:Pressure Sensor 1015.26 PSI (7000 kPa) Vented Gauge Male - 1/4" (6.35mm) BSPP 4 mA ~ 20 mA Cylinder 制造商:te connectivity measurement specialties 系列:M52 零件状态:有效 压力类型:排气式压力计 工作压力:1015.26 PSI（7000 kPa） 输出类型:模拟电流 输出:4 mA ~ 20 mA 精度:±0.25% 电压 - 电源:9 V ~ 30 V 端口尺寸:公型 - 1/4"（6.35mm） BSPP 端口样式:有螺纹 特性:温度补偿 端子类型:连接器 最高压力:2030.53 PSI（14000 kPa） 工作温度:-40°C ~ 125°C 封装/外壳:圆柱型 供应商器件封装:- 标准包装:1 |
| M5254-000002-350BG | 功能描述:Pressure Sensor 5076.32 PSI (35000 kPa) Vented Gauge Male - 1/4" (6.35mm) BSPP 4 mA ~ 20 mA Cylinder 制造商:te connectivity measurement specialties 系列:M52 零件状态:有效 压力类型:排气式压力计 工作压力:5076.32 PSI（35000 kPa） 输出类型:模拟电流 输出:4 mA ~ 20 mA 精度:±0.25% 电压 - 电源:9 V ~ 30 V 端口尺寸:公型 - 1/4"（6.35mm） BSPP 端口样式:有螺纹 特性:温度补偿 端子类型:连接器 最高压力:10152.64 PSI（70000 kPa） 工作温度:-40°C ~ 125°C 封装/外壳:圆柱型 供应商器件封装:- 标准包装:1 |
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