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| 型号： | MAX1464AAI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/47页 |
| 文件大小： | 0K |
| 描述： | IC SENSOR SIGNAL COND 28-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 类型： | 信号调节器 |
| 输入类型： | 模拟 |
| 输出类型： | 逻辑 |
| 接口： | SPI |
| 电流 - 电源： | 890µA |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
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MAX1464
Low-Power, Low-Noise Multichannel
Sensor Signal Processor
21
Maxim Integrated
1) Halt the CPU:
78
2) If partition 1 is to be modified, enter the following
command:
F8
Otherwise, partition 0 is selected.
3) Turn off all analog modes:
03 02 01 00
(write 0000h to DHR[15:0])
D4
(write Dh to PFAR[3:0])
08
(write DHR, 1000h to CPU port
pointed by PFAR[3:0], port D)
03 02 31 10
(write 0031h to DHR[15:0])
E4
(write Eh to PFAR[3:0])
08
(write DHR, 0031h to CPU port
pointed by PFAR[3:0], port E)
83 02 01 00
(write 8000h to DHR[15:0])
F4
(write Fh to PFAR[3:0])
08
(write DHR, 8000h to CPU port
pointed by PFAR[3:0], port F)
At this point, all the MAX1464 analog modules are off.
4) For erasing the whole partition, send the following
command:
E8
Otherwise, if only a page erase is required, first write
PFAR[11:6] with the page address, as:
07 X6 X5 04
(write 0XX0h to PFAR[15:0])
Note that the 2 lower bits of PFAR[7:4] should be
zero, and only the upper 2 bits of that nibble should
be set to the desired value. Then, after writing the
page address, send the page-erase command:
D8
5) Wait at least 4.2ms before sending any other
command to allow the necessary time for the
erase operation to complete.
6) Write the address of the FLASH byte to be written
to PFAR[15:0]:
07 X6 X5 X4
(write 0XXXh to PFAR[15:0])
7) Write the contents of the byte to DHR[7:0]:
X1 X0
(write XXh to DHR[7:0], high nibble
at DHR[7:4])
8) Send the command to execute the FLASH write:
18
9) Repeat steps 6, 7, and 8 for all the bytes to be
written. It is not necessary to send the whole
address and data for every byte that is written. Only
the nibbles that are modified in the PFAR and in the
DHR from previous values must be changed. The
time interval between successive write commands
(18h) must be at least 80s.
10) If partition 1 was selected in step 2, and the user
wants to switch back to partition 0, send the follow
ing command:
78
At this point, partition 0 is selected. The user may
want to go back to step 4 to program partition 0, or
just continue on.
Reading the FLASH Contents
The procedure to read the FLASH contents is no different
from reading any other information from the MAX1464.
The FLASH contents must be copied to the DHR and
read through the serial interface:
1) If the CPU is not halted, halt the CPU:
78
2) If partition 1 is to be read, enter the following
command:
F8
Otherwise, partition 0 is selected.
3) Write the address of the flash byte to be read to
PFAR[15:0]:
07 X6 X5 X4
(write 0XXXh to PFAR[15:0])
4) Copy the contents of FLASH addressed by PFAR to
DHR:
38
5) If the interface is configured in 3-wire mode, send
19
to enable DO on the next CS cycle. Then tri-
state the DI driver, and send 16 SCLK pulses on
the following CS cycle, and DO outputs DHR[15:0].
The FLASH data is present at DHR[7:0]. See Figure
10 for details.
If the interface is configured in 4-wire mode, there
is no need to enable the DO line, as it has already
been enabled by a previous IRS command 09h.
Send the 16 SCLK pulses and retrieve the data on
the DO line.
6) Repeat steps 3, 4, and 5 for every byte to be read.
Only the nibbles that are modified in the PFAR reg-
ister are required to be sent.
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| MAX1464CAI | 功能描述:数字信号处理器和控制器 - DSP, DSC RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| MAX1464CAI+ | 功能描述:数字信号处理器和控制器 - DSP, DSC Low-Power Low-Noise Multichannel Sensor Signal Processor RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| MAX1464CAI+T | 功能描述:数字信号处理器和控制器 - DSP, DSC Low-Power Low-Noise Multichannel Sensor Signal Processor RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
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