Preliminary User’s Manual U19014EJ1V0UD
14
CHAPTER 1 OUTLINE
1.1 Features
{
High speed instruction execution (0.125
µ
s: @ 16 MHz operation with high-speed system clock)
{
General-purpose register: 8 bits
×
32 registers (8 bits
×
8 registers
×
4 banks)
{
ROM, RAM capacities
Program Memory (ROM)
Data Memory
Item
Part Number
Flash memory
Note
Internal High-Speed RAM
Note
Internal Expansion RAM
Note
µ
PD78F0730
16 KB
1 KB
2 KB
Note
The internal flash memory, internal high-speed RAM capacities, and internal expansion RAM capacities
can be changed using the internal memory size switching register (IMS) and the internal expansion RAM
size switching register (IXS). For IMS and IXS, see
19.1 Memory Size Switching Register
and
20.2
Internal Expansion RAM Size Switching Register
.
{
On-chip USB function controller (USBF)
{
On-chip single-power-supply flash memory
{
Self-programming (with boot swap function)
{
On-chip debug function
Note
{
On-chip power-on-clear (POC) circuit and low-voltage detector (LVI)
{
On-chip watchdog timer (operable with the internal low-speed oscillation clock)
{
I/O ports: 19 (N-ch open drain: 2)
{
Timer: 5 channels
•
16-bit timer/event counter: 1 channel
•
8-bit timer/event counter: 2 channels
•
8-bit timer:
1 channel
•
Watchdog timer:
1 channel
{
Serial interface: 3 channels
•
UART: 1 channel
•
CSI:
1 channel
•
USB:
1 channel
{
Power supply voltage: V
DD
= 4.0 to 5.5 V
{
Operating ambient temperature: T
A
= -40 to +85
°
C
Note
The
µ
PD78F0730 has an on-chip debug function, which is provided for development and evaluation. Do not
use the on-chip debug function in products designated for mass production, because the guaranteed
number of rewritable times of the flash memory may be exceeded when this function is used, and product
reliability therefore cannot be guaranteed. NEC Electronics is not liable for problems occurring when the on-
chip debug function is used.
Caution The operating voltage range may change after completion of device evaluation.
1.2 Applications
{
USB – serial conversion
electronic components distributor