![](http://datasheet.mmic.net.cn/370000/PD78F0138M3GK-A--9ET_datasheet_16728522/PD78F0138M3GK-A--9ET_18.png)
User’s Manual U16228EJ2V0UD
18
CHAPTER 1 OUTLINE
1.1 Features
{
Minimum instruction execution time can be changed from high speed (0.2
μ
s: @ 10 MHz operation with X1
input clock) to ultra low-speed (122
μ
s: @ 32.768 kHz operation with subsystem clock)
{
General-purpose register: 8 bits
×
32 registers (8 bits
×
8 registers
×
4 banks)
{
ROM, RAM capacities
Data Memory
Item
Part Number
Program Memory
(ROM)
Internal High-Speed RAM
Internal Expansion RAM
μ
PD780131
8 KB
μ
PD780132
16 KB
512 bytes
μ
PD780133
24 KB
μ
PD780134
Mask ROM
32 KB
1024 bytes
μ
PD78F0134
Note 1
Flash memory
32 KB
Note 2
1024 bytes
Note 2
μ
PD780136
48 KB
μ
PD780138
Mask ROM
60 KB
1024 bytes
1024 bytes
μ
PD78F0138
Flash memory
60 KB
Note 2
1024 bytes
Note 2
1024 bytes
Note 2
Notes 1.
The
μ
PD78F0134 does not support the
μ
PD780136 and 780138.
2.
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).
{
On-chip power-on-clear (POC) circuit and low-voltage detector (LVI)
{
Short startup is possible via the CPU default start using the on-chip Ring-OSC
{
On-chip clock monitor function using on-chip Ring-OSC
{
On-chip watchdog timer (operable with Ring-OSC clock)
{
On-chip multiplier/divider
{
On-chip key interrupt function
{
On-chip clock output/buzzer output controller
{
On-chip regulator
{
I/O ports: 51 (N-ch open drain: 4)
{
Timer
μ
PD780131, 780132: 7 channels
μ
PD780133, 780134, 78F0134, 780136, 780138, 78F0138: 8 channels
{
Serial interface
μ
PD780131, 780132: 2 channels
(UART (LIN (Local Interconnect Network)-bus supported): 1 channel, CSI/UART
μ
PD780133, 780134, 78F0134, 780136, 780138, 78F0138: 3 channels
(UART(LIN (Local Interconnect Network)-bus supported: 1 channel, CSI/UART
Note
: 1 channel)
Note
: 1 channel, CSI: 1 channel)
Note
Select either of the functions of these alternate-function pins.