![](http://datasheet.mmic.net.cn/370000/PD78F0138M3GK-A--9ET_datasheet_16728522/PD78F0138M3GK-A--9ET_436.png)
User’s Manual U16228EJ2V0UD
436
CHAPTER 27
μ
PD78F0134, 78F0138
The
μ
PD78F0134 and 78F0138 are provided as the flash memory version of the 78K0/KE1.
The
μ
PD78F0134 and 78F0138 replace the internal mask ROM of the
μ
PD780134 and 780138 respectively with
flash memory to which a program can be written, erased, and overwritten while mounted on the board. Table 27-1
lists the differences between the
μ
PD78F0134, 78F0138 and the mask ROM versions.
Table 27-1. Differences Between
μ
PD78F0134, 78F0138 and Mask ROM Versions
Item
μ
PD78F0134, 78F0138
Mask ROM Versions
Internal ROM configuration
Flash memory
Mask ROM
Internal ROM capacity
μ
PD78F0134
μ
PD78F0138:
Note 1
: 32 KB
60 KB
Note 2
Note 2
μ
PD780131: 8 KB
μ
PD780132: 16 KB
μ
PD780133: 24 KB
μ
PD780134: 32 KB
μ
PD780136: 48 KB
μ
PD780138: 60 KB
Internal high-speed RAM capacity
μ
PD78F0134
μ
PD78F0138:
Note 1
: 1024 bytes
1024 bytes
Note 2
Note 2
μ
PD780131: 512 bytes
μ
PD780132: 512 bytes
μ
PD780133: 1024 bytes
μ
PD780134: 1024 bytes
μ
PD780136: 1024 bytes
μ
PD780138: 1024 bytes
Internal expansion RAM capacity
μ
PD78F0134
μ
PD78F0138:
Note 1
: None
1024 bytes
Note 2
μ
PD780131: None
μ
PD780132: None
μ
PD780133: None
μ
PD780134: None
μ
PD780136: 1024 bytes
μ
PD780138: 1024 bytes
IC pin
None
Available
V
PP
pin
Available
None
Electrical specifications,
recommended soldering conditions
Refer to the description of electrical specifications and recommended soldering
conditions.
Notes 1.
The
μ
PD78F0134 does not support the
μ
PD780136 and 780138.
2.
The same capacity as the mask ROM versions can be specified by means of the internal memory size
switching register (IMS) and the internal expansion RAM size switching register (IXS).
Caution There are differences in noise immunity and noise radiation between the flash memory and
mask ROM versions. When pre-producing an application set with the flash memory version and
then mass-producing it with the mask ROM version, be sure to conduct sufficient evaluations
for the commercial samples (not engineering samples) of the mask ROM versions.