参数资料
| 型号： | MCP42XXEV |
| 厂商： | Microchip Technology |
| 文件页数： | 18/42页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION MCP42XX |
| 标准包装： | 1 |
| 系列： | PICkit™ |
| 主要目的： | 数字电位器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | MCP4231，MCP4241，MCP4251，MCP4261 |
| 已供物品： | 1 块组装板，1 块裸板，说明文档 |
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MCP42XXEV Evaluation Board User’s Guide
2.4.2
The MCP4261 Device
To make variations to the commands sent to the MCP4261 device (from the commands
and the command formats (see Figure 2-3). For additional device operational
information, refer to the MCP4261 device data sheet (DS22059).
TABLE 2-3:
MEMORY MAP AND THE SUPPORTED COMMANDS
Address
00h
Function
Volatile Wiper 0
Memory
Type
RAM
Allowed Commands
Read, Write,
Disallowed
Commands (2)
—
Increment, Decrement
01h
Volatile Wiper 1
RAM Read, Write,
—
Increment, Decrement
02h
03h
Nonvolatile Wiper 0
Nonvolatile Wiper 1
EEPROM Read, Write (1)
EEPROM Read, Write (1)
Increment, Decrement
Increment, Decrement
04h
Volatile
TCON0 Register
RAM Read, Write Increment, Decrement
05h
STATUS Register
RAM
Read
Write, Increment,
Decrement
06h-0Fh Data EEPROM EEPROM Read, Write
Increment, Decrement
Note 1:
2:
8-bit Command
(Increment or Decrement)
When an EEPROM write is active, these are invalid commands and will generate
an error condition. The user should use a read of the STATUS register to determine
when the write cycle has completed. To exit the error condition, the user must take
the CS pin to the V IH level and then back to the active state (V IL or V IHH ).
This command on this address will generate an error condition. To exit the error
condition, the user must take the CS pin to the V IH level and then back to the active
state (V IL or V IHH ).
16-bit Command
(Read Data or Write Data)
Command Byte
Command Byte
Data Byte
A A A A C C D D
D D D D 1 0 9 8
3 2 1 0
A A A A C C D D D D D D D D D D
D D D D 1 0 9 8 7 6 5 4 3 2 1 0
3 2 1 0
Command
Bits
CC
1 0
Register Memory Data
Address Bits
Command
Bits
Register Memory
Address
Command
Bits
Data
Bits
0 0 = Write Data
0 1 = INCR
1 0 = DECR
1 1 = Read Data
FIGURE 2-3:
DS51898A-page 18
MCP42XX SPI Command Formats.
? 2010 Microchip Technology Inc.
相关PDF资料 |
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| MCP43XXEV | BOARD EVALUATION MCP43XX |
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| MCP46XXEV | EVAL BOARD FOR MCP46XX |
| MCP4XXXDM-DB | BOARD DAUGHTER DIGIPOT MCP4XXX |
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