464
CHAPTER 23
μ
PD78P018F, 78P018FY
Table 23-1. Differences between
μ
PD78P018F, 78P018FY, and Mask ROM Models
Item
μ
PD78P018F, 78P018FY
Mask ROM Model
Internal ROM structure
One-time PROM/EPROM
Mask ROM
Internal ROM capacity
60K bytes
μ
PD78011F, 78011FY: 8K bytes
μ
PD78012F, 78012FY: 16K bytes
μ
PD78013F, 78013FY: 24K bytes
μ
PD78014F, 78014FY: 32K bytes
μ
PD78015F, 78015FY: 40K bytes
μ
PD78016F, 78016FY: 48K bytes
μ
PD78018F, 78018FY: 60K bytes
Internal high-speed RAM
capacity
1024 bytes
μ
PD78011F, 78011FY: 512 bytes
μ
PD78012F, 78012FY: 512 bytes
μ
PD78013F, 78013FY: 1024 bytes
μ
PD78014F, 78014FY: 1024 bytes
μ
PD78015F, 78015FY: 1024 bytes
μ
PD78016F, 78016FY: 1024 bytes
μ
PD78018F, 78018FY: 1024 bytes
Internal extension RAM
capacity
1024 bytes
μ
PD78011F, 78011FY: None
μ
PD78012F, 78012FY: None
μ
PD78013F, 78013FY: None
μ
PD78014F, 78014FY: None
μ
PD78015F, 78015FY: 512 bytes
μ
PD78016F, 78016FY: 512 bytes
μ
PD78018F, 78018FY: 1024 bytes
Changing internal ROM and
internal high-speed RAM
capacities by using memory
size select register (IMS)
Yes
Note 1
No
Changing of internal
extended RAM capacity by
using internal extension RAM
size select register (IXS)
Yes
Note 2
No
IC pin
None
Provided
V
PP
pin
Provided
None
Mask option to contain pull-up Not provided
resistor of P60-P63 pins
Provided
Electrical characteristics and
recommended soldering
conditions
Refer to individual
Data Sheet
.
Notes 1.
The internal PROM is set to 60K bytes and internal high-speed RAM is set to 1024 bytes at RESET.
2.
The internal extension RAM is set to 1024 bytes at RESET.
Caution
The noise immunity and radiation differ between the PROM model and mask ROM model. To
replace a PROM model with a mask ROM model in the course from experimental production to
mass production, evaluate your system with the CS model (not ES model) of the mask ROM
model.