µPD784214A, 784215A, 784216A, 784217A, 784218A, 784214AY, 784215AY, 784216AY, 784217AY, 784218AY
1. DIFFERENCES AMONG MODELS IN µPD784216A, 784216AY/784218A, 784218AY
The only difference among the µPD784214A, 784215A, 784216A, 784217A, and 784218A lies in the internal
The µPD784214AY, 784215AY, 784216AY, 784217AY, and 784218AY are models with the addition of an I2C bus
The µPD78F4216A, 78F4216AY, 78F4218A, and 78F4218AY are provided with a 128 KB/256 KB flash memory
instead of the mask ROM of the above models.
These differences are summarized in Table 1-1.
Table 1-1. Differences Among Models in µPD784216A, 784216AY/784218A, 784218AY Subseries
Internal memory size
External access status
128 KB (Mask ROM)
5,120 bytes 8,192 bytes
VDD = 1.8 to 5.5 V
Refer to the data sheet for each device.
VDD = 1.9 to 5.5 V
Note The internal flash memory capacity and internal RAM capacity can be changed using the internal memory
size switching register (IMS).
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 on the
commercial samples (not engineering samples) of the mask ROM version.
Data Sheet U14121EJ2V0DS00