Security Guide
Keysight E3640A - E3645A DC Power Supplies
Memory information and procedures
Product: E3640A, E3641A, E3642A, E3643A, E3644A, and E3645A
Date: 4 October 2018
For serial numbers below MY53176001, refer to
Memory Information for Serial Numbers below MY53176001
For serial numbers MY53176001 and above, refer to
Memory Information for Serial Numbers MY53176001 and above
Memory Information for Serial Numbers below MY53176001
Memory Type: ROM (Digital Board)
Memory Size: 2 Mbits
Memory Function: Digital microcontroller execution code storage
User Modifiable (Y/N): N
Volatile (Y/N): N
Memory Erase Processes: Not applicable, contains no application-specific information.
Memory Type: RAM (Digital Board)
Memory Size: 256 kbit
Memory Function: Digital microcontroller temporary execution data
User Modifiable (Y/N): N
Volatile (Y/N): Y
Memory Erase Processes: On power cycle.
Memory Type: ROM (Digital Board)
Memory Size: 4 kbit
Memory Function: Product model, versions, calibration data, calibration count, memory-store data, IO configuration, register
configuration and states, calibration secure state, calibration secure code, and calibration message
User Modifiable (Y/N): Y
Volatile (Y/N): N
Memory Erase Processes: Same as the
for serial numbers MY53176001 and above.
