NEC uPD78F4225Y, Manual

Page: 5 / 30

5
µ
PD78F4225Y
1. DIFFERENCES AMONG MODELS IN
µ
PD784225Y SUBSERIES
The only difference among the
µ
PD784224Y and 784225Y lies in the internal memory capacity.
The
µ
PD78P4225Y is provided with a 128-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
µ
PD784225Y Subseries
Part Number
µ
PD784224Y
µ
PD784225Y
µ
PD78F4225Y
Item
Internal ROM 96 KBytes 128 KBytes 128 KBytes
(mask ROM) (mask ROM) (flash memory)
Internal RAM 3584 Bytes 4352 Bytes
Internal memory size None Provided
switching register (IMS)
V
PP
pin None Provided