参数资料
型号: DV164039
厂商: Microchip Technology
文件页数: 45/64页
文件大小: 0K
描述: KIT DEV PIC24FJ256DA210
产品培训模块: Intro to PIC24FJDA Family
视频文件: PIC24FJ256DA210 Development Board Overview
标准包装: 1
系列: dsPIC™
类型: MCU
适用于相关产品: PIC24FJ256DA210
所含物品: 开发板,显示板,3 个裸板,MPLAB ICD-3,线缆,电源
Development Board Hardware
4.4.5.2
EXTERNAL FLASH MEMORY
The PIC24FJ256DA210 Development Board has two external Flash memory devices.
Selection is controlled by jumper JP23. Only one can be enabled at any given time:
? 512 Kbyte Parallel Flash (SST39LF400A), connected to the EPMP port.
? 16 Mbits (2 Mbyte) SPI Serial Flash (SST25VF016B).
Flash memory configuration uses the same jumpers and resistors as SRAM configura-
tion (Figure 4-9). An additional jumper, JP23 (callout 1), selects between the serial and
parallel devices.
FIGURE 4-9:
FLASH MEMORY CONFIGURATION
4
4.4.5.2.1
2
1
Serial Flash Memory
M
3
To use the SPI Flash memory, set jumper JP23 to bridge pins 2 and 3 (PMCS2 – SPI).
The microcontroller ’s SPI module is used to communicate with the memory device; the
PMCS2 signal is used as the Chip Select signal .
4.4.5.2.2
Parallel Flash Memory
Like the SRAM, the on-board parallel Flash memory can be configured to use one of
three memory address ranges (shown in Table 4-8).
TABLE 4-8:
PARALLEL FLASH MEMORY RANGES
Active EPMP
Size
JP11
R63
Address
Recommended Part #
Lines
256 Kbyte
(default)
512 Kbyte
Open
Bridged
Open
Open
PMA<16:0>
PMA<17:0>
SST39LF400A-55-4C-EKE
1 Mbyte
Bridged
0 ?
PMA<18:0>
SST39VF800A-70-4C-EKE
? 2010 Microchip Technology Inc.
DS51911A-page 45
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