CHAPTER 1 OVERVIEW
User’s Manual U16898EJ3V0UD
20
1.7 Functional Outline
Item
µ
PD78F9221
µ
PD78F9222
Flash memory
2 KB
4 KB
Internal
memory
High-speed RAM
128 bytes
256 bytes
Memory space
64 KB
X1 input clock (oscillation frequency)
Crystal/ceramic/external clock input:
10 MHz (V
DD
= 2.0 to 5.5 V)
High speed (oscillation
frequency)
Internal oscillation: 8 MHz (TYP.)
Internal
oscillation
clock
Low speed (for TMH1
and WDT)
Internal oscillation: 240 kHz (TYP.)
General-purpose registers
8 bits
×
8 registers
Instruction execution time
0.2
µ
s/0.4
µ
s/0.8
µ
s/1.6
µ
s/3.2
µ
s (X1 input clock: f
X
= 10 MHz)
I/O port
Total:
17 pins
CMOS I/O:
15 pins
CMOS input:
1 pin
CMOS output: 1 pin
Timer
•
16-bit timer/event counter: 1 channel
•
8-bit timer (timer H1):
1 channel
•
8-bit timer (timer 80):
1 channel
•
Watchdog timer:
1 channel
Timer output
2 pins (PWM: 1 pin)
A/D converter
10-bit resolution
×
4 channels
Serial interface
LIN-bus-supporting UART mode: 1 channel
External 4
Vectored
interrupt sources
Internal 9
Reset
•
Reset by RESET pin
•
Internal reset by watchdog timer
•
Internal reset by power-on clear
•
Internal reset by low-voltage detector
Supply voltage
V
DD
= 2.0 to 5.5 V
Note
Operating temperature range
(R) products, (S) products, (T) products, (A) products: T
A
=
−
40 to +85
°
C
(T2) products, (A2) products: T
A
=
−
40 to +125
°
C
Package
20-pin plastic SSOP
Note
Use this product in a voltage range of 2.2 to 5.5 V because the detection voltage (V
POC
) of the power-on- clear
(POC) circuit is 2.1 V
±
0.1 V.