ADUC7124 Analog Devices, ADUC7124 Datasheet - Page 47

• Manufacturer Part Number: ADUC7124
• Description: Precision Analog Microcontroller, 12-Bit Analog I/O, Large Memory, ARM7TDMI MCU with Enhanced IRQ Handler
• Manufacturer: Analog Devices

Specifications of ADUC7124

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 40
• Sram (bytes): 32000Bytes
• Gpio Pins: 30
• Adc # Channels: 12

Table 54. FEExMOD MMR Bit Descriptions
Bit
[7:5]
4
3
2
[1:0]
Table 55. Command Codes in FEExCON
Code
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
1
The FEExCON register always reads 0x07 immediately after execution of any of these commands.
1
1
1
1
1
1
1
Command
Null
Single read
Single write
Erase/write
Single verify
Single erase
Mass erase
Reserved
Reserved
Reserved
Reserved
Signature
Protect
Reserved
Reserved
Ping
Description
Reserved.
Flash/EE interrupt enable.
Set by the user to enable the Flash/EE interrupt. The interrupt occurs when a command is complete.
Cleared by the user to disable the Flash/EE interrupt.
Erase/write command protection.
Set by the user to enable the erase and write commands.
Cleared to protect the Flash/EE memory against the erase/write command.
Reserved. Should always be set to 0 by the user.
Flash/EE wait states. Both Flash/EE blocks must have the same wait state value for any change to take effect.
Description
Idle state.
Load FEExDAT with the 16-bit data indexed by FEExADR.
Write FEExDAT at the address pointed to by FEExADR. This operation takes 50 µs.
Erase the page indexed by FEExADR and write FEExDAT at the location pointed to by FEExADR. This operation
takes 20 ms.
Compare the contents of the location pointed to by FEExADR to the data in FEExDAT. The result of the
comparison is returned in FEExSTA, Bit 1.
Erase the page indexed by FEExADR.
Erase user space. The 2 kB of kernel are protected in Block 0. This operation takes 2.48 sec. To prevent accidental
execution, a command sequence is required to execute this instruction.
Reserved.
Reserved.
Reserved.
Reserved.
Gives a signature of the 64 kB of Flash/EE in the 24-bit FEExSIGN MMR. This operation takes 32,778 clock cycles.
This command can be run only once. The value of FEExPRO is saved and can be removed only with a mass erase
(0x06) or with the key.
Reserved.
Reserved.
No operation, interrupt generated.
Rev. B | Page 47 of 104
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