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User’s Manual U14701EJ3V0UD
APPENDIX A DIFFERENCES BETWEEN
μ
PD780308, 780318, 780328,
AND 780338 SUBSERIES
Table A-1 shows the major differences between
μ
PD780308, 780318, 780328, and 780338 Subseries.
Table A-1. Major Differences Between
μ
PD780308, 780318, 780328, and 780338 Subseries (1/2)
Part Number
μ
PD780308 Subseries
μ
PD780318
Subseries
μ
PD780328
Subseries
μ
PD780338
Subseries
Item
I
2
C bus built-in model
(Y Subseries)
Provided
Not provided
PROM
(flash memory) version
μ
PD78P0308
μ
PD78F0338
Power supply voltage
V
DD
= 2.0 to 5.5 V
V
DD
= 1.8 to 5.5 V
ROM
μ
PD780306: 48 KB
μ
PD780308: 60 KB
μ
PD780316, 780326, 780336: 48 KB
μ
PD780318, 780328, 780338: 60 KB
Internal high-speed RAM
1,024 bytes
Internal expansion RAM
1,024 bytes
1,536 bytes
LCD display RAM
40
×
4 bits
40
×
8 bits
Minimum instruction
execution time
0.4
μ
s/0.8
μ
s/1.6
μ
s/3.2
μ
s/
6.4
μ
s/12.8
μ
s (@f
X
= 5.0 MHz)
0.2
μ
s/0.4
μ
s/0.8
μ
s/1.6
μ
s/3.2
μ
s
(@f
X
= 10.0 MHz)
Number of I/O ports
57
70
62
54
A/D converter
8 bits
×
8
10 bits
×
8
D/A converter
—
8 bits
×
1
LCD controller/driver
Bias: 1/2 and 1/3 can be selected
Bias: 1/3 only
Internal booster circuit employed for LCD driver
reference voltage generator (
×
3)
Blinking display possible (blinking period can be
selected: 0.5 s or 1 s)
Segment signal output
40 max.
24 max.
32 max.
40 max.
Common signal output
4 max. (for dynamic display only)
4 max. (for dynamic display)
1 max. (for static display)
Serial
interface
Subseries
without Y
3-wire/2-wire/SBI: 1
3-wire/UART: 1
3-wire: 1
3-wire/UART: 1
3-wire: 1
Y Subseries
3-wire/2-wire/I
2
C: 1
3-wire/UART: 1
3-wire: 1
—
Timer
16-bit timer/event counter: 1
8-bit timer/event counter: 2
Watch timer: 1
Watchdog timer: 1
16-bit timer/event counter: 2
8-bit timer/event counter: 3
Watch timer: 1
Watchdog timer: 1