33
CHAPTER 1 OVERVIEW
User’s Manual U12697EJ3V0UM
1.1 Features
•
Inherits the peripheral functions of the
µ
PD780058 Subseries
•
Minimum instruction execution time
• 160 ns (main system clock: @ f
XX
= 12.5 MHz operation)
• 61
µ
s (subsystem clock: @ f
XT
= 32.768 kHz operation)
•
Instruction set suited to control applications
•
Interrupt controller (4-level priority)
• Vectored interrupt servicing, macro service, context switching
•
Standby function
• HALT, STOP, IDLE modes
• In the low power consumption mode: HALT, IDLE modes (subsystem clock operation)
•
On-chip memory: Mask ROM
128 KB (
µ
PD784225)
96 KB (
µ
PD784224)
Flash memory 128 KB (
µ
PD78F4225)
RAM
4,352 bytes (
µ
PD784225, 78F4225)
3,584 bytes (
µ
PD784224)
•
I/O pins: 67
• Software-programmable pull-up resistors: 57 inputs
• LED direct drive possible: 16 outputs
•
Timers: 16-bit timer/event counter
×
1 unit
8-bit timer/event counter
×
2 units
8-bit timer
×
2 units
•
Watch timer: 1 channel
•
Watchdog timer: 1 channel
•
Serial interfaces
• UART/IOE (3-wire serial I/O): 2 channels (on-chip baud rate generator)
• CSI/IIC0
Note
(3-wire serial I/O, multimaster supporting I
2
C bus
Note
): 1 channel
•
A/D converter: 8-bit resolution
×
8 channels
•
D/A converter: 8-bit resolution
×
2 channels
•
Real-time output port (by combining with the timer/counters, two stepper motors can be independently controlled.)
•
Clock frequency division function
•
Clock output function: Select from f
XX
, f
XX
/2, f
XX
/2
2
, f
XX
/2
3
, f
XX
/2
4
, f
XX
/2
5
, f
XX
/2
6
, f
XX
/2
7
, f
XT
•
Buzzer output function: Select from f
XX
/2
10
, f
XX
/2
11
, f
XX
/2
12
, f
XX
/2
13
•
Power supply voltage: V
DD
= 1.8 to 5.5 V (
µ
PD784224, 784225, 784224Y, 784225Y)
V
DD
= 1.9 to 5.5 V (
µ
PD78F4225, 78F4225Y only)
Note
Only in the
µ
PD784225Y Subseries
