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CPU Units Section 3-1
3. The CQM1H-ME16K and CQM1H-ME16R cannot be used in CQM1 PCs.
4. The effective life of the EEPROM and flash memory is 50,000 writes. Data
may become unstable if the memory is used after exceeding the effective
life.
Mounting EPROM Chips One of the following EPROM Chips must be purchased separately and
mounted to a EPROM Memory Cassette.
Before mounting the EPROM Chip, set the switches on the Memory Cassette
according to the type of Chip.
The switches are set as follows:
Mount the EPROM Chip to the EPROM Memory Cassette as shown below.
Align the notch in the EEPROM Chip with the notch on the socket on the
Memory Cassette.
Write-protecting EEPROM or Flash Memory Cassettes
EEPROM Memory Casettes
EEPROM Memory Cassettes have a write-protect switch that can be used to
prevent data on the Cassette from being deleted or overwritten. The switch is
Model ROM version Capacity Access speed
ROM-ID-B 27128 or equivalent 8 Kwords 150 ns
ROM-JD-B 27256 or equivalent 16 Kwords 150 ns
ROM-KD-B 27512 or equivalent 32 Kwords 150 ns
EPROM type SW1 SW2
27128 Off Off
27256 ON Off
27512 ON ON
Notch
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