CHAPTER 1 OUTLINE
Preliminary User’s Manual U16315EJ1V0UD
34
1.7 Outline of Functions
(1/2)
Item
µ
PD780121
µ
PD780122
µ
PD780123
µ
PD780124
µ
PD78F0124
Mask ROM
8 K
16 K
24 K
32 K
−
Flash memory
−
32 K
Note 1
High-speed RAM
512
1 K
1 K
Note 1
Internal
memory
(bytes)
Expansion RAM
−
Memory space
64 KB
X1 input clock (oscillation
frequency)
Ceramic/crystal/external clock oscillation
REGC pin is directly connected
to V
DD
10 MHz: V
DD
= 4.0 to 5.5 V, 8.38 MHz: V
DD
= 3.3 to 5.5 V, 5 MHz: V
DD
= 2.7 to 5.5 V
0.1
µ
F capacitor is connected
to REGC pin
8.38 MHz: V
DD
= 3.3 to 5.5 V, 5 MHz: V
DD
= 2.7 to 5.5 V
Ring-OSC clock
(oscillation frequency)
On-chip Ring oscillation (240 kHz (TYP.))
Subsystem clock
(oscillation frequency)
Crystal/external clock oscillation (32.768 kHz)
General-purpose registers
8 bits
×
32 registers (8 bits
×
8 registers
×
4 banks)
0.2
µ
s/0.4
µ
s/0.8
µ
s/1.6
µ
s/3.2
µ
s (X1 input clock: @ f
XP
= 10 MHz operation)
8.3
µ
s/16.6
µ
s/33.2
µ
s/66.4
µ
s/132.8
µ
s (TYP.) (Ring-OSC clock: @ f
R
= 240 kHz (TYP.)
operation)
Minimum instruction execution
time
122
µ
s (subsystem clock: @ f
XT
= 32.768 kHz operation)
Instruction set
• 16-bit operation • Multiply/divide (8 bits
×
8 bits
×
4 banks)
• Bit manipulate (set, reset, test, and Boolean operation) • BCD adjust, etc.
I/O ports
Total:
39
CMOS I/O
26
CMOS input
8
CMOS output
1
N-ch open-drain I/O
4
Timers
• 16-bit timer/event counter: 1 channel
• 8-bit timer/event counter:
2 channels
• 8-bit timer:
2 channels
• Watch timer
1 channel
• Watchdog timer:
1 channel
Timer outputs
5 (PWM output: 3)
Clock output
• 78.125 kHz, 156.25 kHz, 312.5 kHz, 625 kHz, 1.25 MHz, 2.5 MHz, 5 MHz, 10 MHz
(X1 input clock: 10 MHz)
• 32.768 kHz (subsystem clock: 32.768 kHz)
A/D converter
10-bit resolution
×
8 channels
Serial interface
• UART mode supporting LIN-bus:
1 channel
• 3-wire serial I/O mode/UART mode
Note 2
: 1 channel
Notes 1.
The internal flash memory capacity and internal high-speed RAM capacity can be changed using the
internal memory size switching register (IMS).
2.
Select either of the functions of these alternate-function pins.