h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 522

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 16 I
16.1.2
Figure 16.1 shows a block diagram of the I
Figure 16.2 shows an example of I/O pin connections to external circuits. Channel 0 I/O pins and
channel 1 I/O pins differ in structure, and have different specifications for permissible applied
voltages. For details, see section 25, Electrical Characteristics.
Rev. 3.00 Jan 18, 2006 page 494 of 1044
REJ09B0280-0300
Direct bus drive (with SCL and SDA pins)
Automatic switching from formatless mode to I
Two pins—P52/SCL0 and P97/SDA0—(normally NMOS push-pull outputs) function as
NMOS open-drain outputs when the bus drive function is selected.
Two pins—P86/SCL1 and P42/SDA1—(normally CMOS pins) function as NMOS-only
outputs when the bus drive function is selected.
Formatless operation (no start/stop conditions, non-addressing mode) in slave mode
Operation using a common data pin (SDA) and independent clock pins (VSYNCI, SCL)
Automatic switching from formatless mode to I
Block Diagram
2
C Bus Interface
2
C bus interface.
2
C bus format (channel 0 only)
2
C bus format on the fall of the SCL pin