EMPROT Datasheet, PDF (10/17 Pages) rfsolutions.ltd – Micro RWD EM4102 Low Power Version

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Program EEPROM
The Micro RWD has internal EEPROM memory for storing system parameters such as
polling rate and authorised identity codes (serial numbers). This command sequence allows
individual bytes of the EEPROM to be programmed with new data. The data is internally read
back after programming to verify successful operation. Note that due to the fundamental
nature of these system parameters, incorrect data may render the system temporarily
inoperable.
Command:
Argument1:
Argument2:
B7
B0
01010000
NNNNNNNN
DDDDDDDD
Acknowledge: 1 X X X F X X F
(Ascii “P”, 0x50)
(N = EEPROM memory location 0 - 255)
(D = data to write to EEPROM)
(F = Status flags)
Internal EEPROM memory map
Polling delay parameter values (EEPROM location 0):
Parameter 0 value
0x00
0x10
0x20
0x30
0x40
0x50
0x60
0x70
0x80
0x90
0xA0
0xB0
Polling Delay
SLEEP Period
0 mS
8 mS
16 mS
32 mS
65 mS
132 mS
262 mS
524 mS
1 second
2 seconds
4 seconds
8 seconds
Polling delay can be set from 0 to 8 seconds to give complete control over current
consumption and battery life.
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