m3819 Renesas Electronics Corporation., m3819 Datasheet - Page 144

• Manufacturer Part Number: m3819
• Description: Mitsubishi 8-bit Single-chip Microcomputer 740 Family / 38000 Series
• Manufacturer: Renesas Electronics Corporation.

2. APPLICATION
Fig. 2.5.28 Enlarged view of Key-scan of ports P3
Fig. 2.5.29 Setting of related registers [FLD display by software]
130
Figure 2.5.29 shows a setting of related registers.
The waveform shown below is created by software, and the Key-scan is performed.
FLDM2
P2D
FLDM1
P3
P3
P3
P3
0
1
2
7
FLDC mode register 2 (Address:37
Port P2 direction register (Address:05
FLDC mode register 1 (Address:36
0
1
0
0
0
0
3819 Group USER’S MANUAL
0
Ordinary mode
Stop displaying
Set ports P2
0
Dull the output waveform of the
High-breakdown-voltage port
to P3
16
16
)
)
16
)
7
7
–P2
4
to the input mode
2.5 FLD controller
MITSUBISHI MICROCOMPUTER
3819 Group