CHAPTER 1 OUTLINE
Preliminary User’s Manual U19014EJ1V0UD
18
1.6 Outline of Functions
(1/2)
Item
µ
PD78F0730
Flash memory
(self-programming
supported)
Note
16 KB
High-speed RAM
Note
1 KB
Internal
memory
Expansion RAM
Note
2 KB
Memory space
64 KB
High-speed system
clock
X1 (crystal/ceramic) oscillation, external main system clock input (EXCLK)
12 or 16 MHz: V
DD
= 4.0 to 5.5 V
Main system
clock
(oscillation
frequency)
Internal high-speed
oscillation clock
Internal oscillation
16 MHz (TYP.): V
DD
= 4.0 to 5.5 V
Internal low-speed oscillation clock
(for TMH1, WDT)
Internal oscillation
240 kHz (TYP.): V
DD
= 4.0 to 5.5 V
USB clock
X1 (crystal/ceramic) oscillation, external main system clock input (EXCLK)
12/2 or 16/4 MHz: V
DD
= 4.0 to 5.5 V (multiplied by 8 or 12 by PLL function)
General-purpose registers
8 bits
×
32 registers (8 bits
×
8 registers
×
4 banks)
0.125
µ
s (high-speed system clock: @ f
XH
= 16 MHz operation)
Minimum instruction execution time
0.125
µ
s (internal high-speed oscillation clock: @ f
RH
= 16 MHz (TYP.) operation)
Instruction set
• 8-bit operation, 16-bit operation
• Multiply/divide (8 bits
×
8 bits, 16 bits
÷
8 bits)
• Bit manipulate (set, reset, test, and Boolean operation)
• BCD adjust, etc.
I/O ports
Total:
19
CMOS I/O:
17
N-ch open-drain I/O (6 V withstanding voltage): 2
Timers
• 16-bit timer/event counter: 1 channel
• 8-bit timer/event counter: 2 channels
• 8-bit timer:
1 channel
• Watchdog timer:
1 channel
Timer outputs
4 (PWM output: 3, PPG output: 1)
Serial interface
• UART:
1 channel
• 3-wire serial I/O:
1 channel
• USB:
1 channel
Internal 15
Vectored
interrupt sources External 4
Reset
• Reset using RESET pin
• Internal reset by watchdog timer
• Internal reset by power-on-clear
• Internal reset by low-voltage detector
Note
The internal flash memory capacity, internal high-speed RAM capacity, and internal expansion RAM capacity
can be changed using the internal memory size switching register (IMS) and the internal expansion RAM size
switching register (IXS).
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