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71
CHAPTER 1 FEATURES OF 78K/IV SERIES PRODUCTS
1.11.4 Outline of functions
(1/2)
Product Name
Item
μ
PD784224Y
μ
PD784225Y
μ
PD78F4225Y
Number of basic instructions (mnemonics)
113
General registers
8 bits
×
16 registers
×
8 banks or 16 bits
×
8 registers
×
8 banks (memory mapping)
Minimum instruction execution time
160 ns/320 ns/640 ns/1,280 ns/2,560 ns
(main system clock: at 12.5-MHz operation)
61
μ
s (subsystem clock: at 32.768-kHz operation)
Internal memory
capacity
ROM
96 Kbytes
(Mask ROM)
128 Kbytes
(Mask ROM)
128 Kbytes
(Flash memory)
RAM
3,584 bytes
4,352 bytes
Memory space
1 Mbyte in total of program and data
I/O ports
Total
67
CMOS inputs
8
CMOS I/O
59
Pins with added
Pins with pull-up
functions
Note
57
LED direct drive outputs
16
Real-time output ports
4 bits
×
2, or 8 bits
×
1
Timer/counters
Timer/counter:
(16 bits)
Timer register
×
1
Capture/compare register
×
2 PWM/PPG output
Pulse output possible
Square wave output
One-shot pulse output
Timer/counter 1: Timer register
×
1
(8 bits)
Pulse output possible
PWM output
Square wave output
Compare register
×
1
Timer/counter 2: Timer register
×
1
(8 bits)
Pulse output possible
PWM output
Square wave output
Compare register
×
1
Timer/counter 5: Timer register
×
1
(8 bits)
`
Compare register
×
1
Timer/counter 6: Timer register
×
1
(8 bits)
Compare register
×
1
Serial interfaces
UART/IOE (3-wire serial I/O) : 2 channels (on-chip baud rate generator)
CSI (3-wire serial I/O, multimaster supported I
2
C bus): 1 channel
A/D converter
8-bit resolution
×
8 channels
D/A converter
8-bit resolution
×
2 channels
Clock output
Selectable 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
Selectable from f
XX
/2
10
, f
XX
/2
11
, f
XX
/2
12
, f
XX
/2
13
Watch timer
1 channel
Watchdog timer
1 channel
Note
The pins with additional functions are included in the I/O pins.