UPD78P083GB-3BS-MTX-A Datasheet, PDF (15/58 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD78P083
1. DIFFERENCES BETWEEN THE µPD78P083 AND MASK ROM VERSIONS
The µPD78P083 is a single-chip microcontroller with an on-chip one-time PROM or with an on-chip EPROM which has
program write, erasure and rewrite capability.
Setting the internal memory size switching register (IMS) makes the functions except the PROM specification identical
to the mask ROM versions, that is, the µPD78081 and µPD78082.
Differences between the µPD78P083 and mask ROM versions are shown in Table 1-1.
Table 1-1. Differences between the µPD78P083 and Mask ROM Versions
Parameter
ROM type
ROM capacity
µPD78P083
One-time PROM/EPROM
24 Kbytes
Internal high-speed RAM capacity
512 bytes
Internal ROM and internal high-speed
RAM capacity change by internal
memory size switching register
IC pin
VPP pin
Electrical specifications
Can be changed ^Note
No
Yes
Refer to a data sheet of each product
Mask ROM Versions
Mask ROM
µPD78081 : 8 Kbytes
µPD78082 : 16 Kbytes
µPD78081 : 256 bytes
µPD78082 : 384 bytes
Can not be changed
Yes
No
Note The internal PROM becomes 24 Kbytes and the internal expansion RAM becomes 512 bytes by the RESET input.
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