7220 Datasheet, PDF (147/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

M37220M3-XXXSP/FP
4.5 Functional description
4.5 Functional description
Functions of M37220M3-XXXSP/FP are partially different from those of M37221M6-XXXSP/FP. Table 4.5.1
shows the difference between M37220M3-XXXSP/FP and M37221M6-XXXSP/FP.
Table 4.5.1 Difference between M37220M3-XXXSP/FP and M37221M6-XXXSP/FP
Paramater
M37220M3-XXXSP/FP
M37221M6-XXXSP/FP
Programmable I/O ports
33
33
Port P0
8 bits
8 bits
Port P1
8 bits
8 bits
(Functions except port are
partially different.)
Port P2
8 bits
8 bits
Port P3
8 bits
8 bits
(Functions except port are
partically different.)
Port P5
4 bits
4 bits
Interrupts
No multi-master I²C-BUS
There is multi-master I²C-BUS
interface interrupt
interface interrupt
(Priority level is the same as
M37221M6-XXXSP/FP.)
D-A converter
Included
2 (6-bit resolution)
Multi-master I²C-BUS interface
Included
1 (2 systems)
CRT display function
Number of display characters 20 characters ! 2 lines
24characters ! 2 lines
Kinds of characters
128 kinds
256 kinds
Kinds of character back
Not available
Possible
ground colors
(It can be specified by the character.)
Maximum 7 kinds
7220 Group User’s Manual
4-9