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OVERVIEW
1.1 Performance overview
Table 1.1.2 Performance overview (2)
Parameter
Subroutine nesting
Interrupt
Clock generating circuit
Power source voltage
Power dissipation
12V withstand ports
LED drive ports
Operating temperature range
Device structure
Package
CRT display function
Note: Only M37221M8-XXXSP and M37221MA-XXXSP have the function.
1-4
M37221M4-XXXSP
M37221M6-XXXSP/FP
M37221M8-XXXSP
M37221MA-XXXSP
CRT ON
CRT OFF
In stop mode
M37221M4-XXXSP
M37221M6-XXXSP
M37221M8-XXXSP
M37221MA-XXXSP
M37221M6-XXXFP
Number of display characters
Dot structure
Kinds of characters
Kinds of character sizes
K i n d s o f c h a r a c t e r
colors
Display position (horizontal, vertical)
7220 Group User's Manual
Performance
96 levels (maximum)
128 levels (maximum)
External interrupt
3, Internal timer interrupt
I/O interrupt
1, CRT interrupt
BUS interface interrupt
V
interrupt
1, BRK interrupt
SYNC
2 built-in circuits (externally connected to a ceramic
resonator or a quartz-crystal oscillator)
5 V ± 10 %
165 mW typ. (at oscillation frequency f(X
f
= 8 MHz)
CRT
110 mW typ. (at oscillation frequency f(X
1.65 mW (maximum)
6
4
–10 °C to 70 °C
CMOS silicon gate process
42-pin shrink plastic molded DIP
42-pin shrink plastic molded SOP
24 characters
2 lines (maximum 16 lines by software)
12
16 dots
256 kinds
3 kinds
Maximum 7 kinds (R, G, B); can be specified by the
character
64 levels (horizontal)
1, Multi-master I
1, f(X
)/4096 interrupt
IN
1
) = 8 MHz,
IN
) = 8 MHz)
IN
128 levels (vertical)
4, Serial
2
C-
1,
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