HD64F2149 Datasheet, PDF (776/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

The chip
Port
2 kΩ
Darlington pair
Figure 25.1 Darlington Pair Drive Circuit (Example)
The chip
600 Ω
Ports 1 to 3
LED
Figure 25.2 LED Drive Circuit (Example)
25.3 AC Characteristics
Figure 25.3 shows the test conditions for the AC characteristics.
Chip output
pin
C
V_CC
R_L
C = 30 pF: All output ports
R_L = 2.4 kΩ
R_H = 12 kΩ
I/O timing test levels
R_H
• Low level: 0.8 V
• High level: 2.0 V
Figure 25.3 Output Load Circuit
742