Datasheet

MCP414X/416X/424X/426X
DS22059B-page 46 © 2008 Microchip Technology Inc.
TABLE 7-2: MEMORY MAP AND THE SUPPORTED COMMANDS
Address
Command
Data
(10-bits)
(1)
SPI String (Binary)
Value Function MOSI (SDI pin) MISO (SDO pin)
(2)
00h Volatile Wiper 0 Write Data nn nnnn nnnn 0000 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 0000 11nn nnnn nnnn 1111 111n nnnn nnnn
Increment Wiper — 0000 0100 1111 1111
Decrement Wiper — 0000 1000 1111 1111
01h Volatile Wiper 1 Write Data nn nnnn nnnn 0001 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 0001 11nn nnnn nnnn 1111 111n nnnn nnnn
Increment Wiper — 0001 0100 1111 1111
Decrement Wiper — 0001 1000 1111 1111
02h NV Wiper 0 Write Data nn nnnn nnnn 0010 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 0010 11nn nnnn nnnn 1111 111n nnnn nnnn
HV Inc. (WL0 DIS)
(3)
— 0010 0100 1111 1111
HV Dec. (WL0 EN)
(4)
— 0010 1000 1111 1111
03h NV Wiper 1 Write Data nn nnnn nnnn 0011 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 0011 11nn nnnn nnnn 1111 111n nnnn nnnn
HV Inc. (WL1 DIS)
(3)
— 0011 0100 1111 1111
HV Dec. (WL1 EN)
(4)
— 0011 1000 1111 1111
04h
(5)
Volatile
TCON Register
Write Data nn nnnn nnnn 0100 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 0100 11nn nnnn nnnn 1111 111n nnnn nnnn
05h
(5)
Status Register Read Data nn nnnn nnnn 0101 11nn nnnn nnnn 1111 111n nnnn nnnn
06h
(5)
Data EEPROM Write Data nn nnnn nnnn 0110 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 0110 11nn nnnn nnnn 1111 111n nnnn nnnn
07h
(5)
Data EEPROM Write Data nn nnnn nnnn 0111 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 0111 11nn nnnn nnnn 1111 111n nnnn nnnn
08h
(5)
Data EEPROM Write Data nn nnnn nnnn 1000 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 1000 11nn nnnn nnnn 1111 111n nnnn nnnn
09h
(5)
Data EEPROM Write Data nn nnnn nnnn 1001 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 1001 11nn nnnn nnnn 1111 111n nnnn nnnn
0Ah
(5)
Data EEPROM Write Data nn nnnn nnnn 1010 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 1010 11nn nnnn nnnn 1111 111n nnnn nnnn
0Bh
(5)
Data EEPROM Write Data nn nnnn nnnn 1011 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 1011 11nn nnnn nnnn 1111 111n nnnn nnnn
0Ch
(5)
Data EEPROM Write Data nn nnnn nnnn 1100 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 1100 11nn nnnn nnnn 1111 111n nnnn nnnn
0Dh
(5)
Data EEPROM Write Data nn nnnn nnnn 1101 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 1101 11nn nnnn nnnn 1111 111n nnnn nnnn
0Eh
(5)
Data EEPROM Write Data nn nnnn nnnn 1110 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 1110 11nn nnnn nnnn 1111 111n nnnn nnnn
0Fh Data EEPROM Write Data nn nnnn nnnn 1111 00nn nnnn nnnn 1111 1111 1111 1111
Read Data nn nnnn nnnn 1111 11nn nnnn nnnn 1111 111n nnnn nnnn
HV Inc. (WP DIS)
(3)
— 1111 0100 1111 1111
HV Dec. (WP EN)
(4)
— 1111 1000 1111 1111
Note 1: The Data Memory is only 9-bits wide, so the MSb is ignored by the device.
2: All these Address/Command combinations are valid, so the CMDERR bit is set. Any other Address/Command combi-
nation is a command error state and the CMDERR bit will be clear.
3: Disables WiperLock Technology for wiper 0 or wiper 1, or disables Write Protect.
4: Enables WiperLock Technology for wiper 0 or wiper 1, or enables Write Protect.
5: Reserved addresses: Increment or Decrement commands are invalid for these addresses.