Microcomputer
8/16-Bit Single Chip Microcomputer
s 78K/II series (2/2)
Type number
µPD78220 µPD78224 µPD78P224 µPD78233 µPD78234 µPD78237 µPD78238 µPD78P238
Number of instructions
Minimum instruction
execution cycle
Data memory space
extension function
500 ns/
12 MHz
333 ns/12 MHz
500 ns/
12 MHz
65
333 ns/
12 MHz
1M bytes
500 ns/
12 MHz
333 ns/12 MHz
Internal
memory
ROM size
RAM size
–
16K bytes 16K bytes
–
(PROM)
16K bytes
640 bytes
640 bytes
–
32K bytes 32K bytes
(PROM)
1024 bytes
Inter-
rupts
I/O
pins
External sources
Internal sources
Inputs
Outputs
Input/output ports
8
9
8
12
20
25
35
(of these, 8 (of these, 8 can directly
can directly drive LED)
drive LED)
7
12
16
18
(can be
pulled up by
software. 8
can directly
drive LED)
36
(can be
pulled up by
software. 24
can directly
drive LED)
12
18
(can be
pulled up by
software. 8
can directly
drive LED)
36
(can be pulled up by
software. 24 can directly
drive LED)
Analog inputs
Variable threshold voltage
input port (16 steps): 8
8-bit
A/D converter 8 channels
Analog outputs
8-bit D/A converter: 2 outputs
Timer/Counter
Serial interface
16-bit timer/counter ∞ 1
8-bit timer/counter ∞ 2
16-bit timer/counter ∞ 1
8-bit timer/counter ∞ 3
UART (internal dedicated baud rate generator) ááá 1 channel
Clock synchronized (can accommodate SBI) ááááá 1 channel
Features
• Real-time output port for stepping
motor control
• Real-time output port for stepping motor control
• Two 12-bit PWM outputs
Package
• 94-pin QFP
• 84-pin QFJ
• 84-pin QFJ
• 80-pin QFP
• 94-pin QFP
Same as
left
• 94-pin
WQFN
47