Datasheet

R01DS0011EJ0101 Rev.1.01 Page 26 of 102
Oct 28, 2011
R8C/LA3A Group, R8C/LA5A Group, R8C/LA6A Group, R8C/LA8A Group 1. Overview
I: Input O: Output I/O: Input and output
Note:
1. Contact the oscillator manufacturer for oscillation characteristics.
Table 1.19 Pin Functions for R8C/LA5A Group (2)
Item Pin Name I/O Type Description
I
2
C bus
SCL I/O Clock I/O pin.
SDA I/O Data I/O pin.
SSU SSI I/O Data I/O pin.
SCS
I/O Chip-select signal I/O pin.
SSCK I/O Clock I/O pin.
SSO I/O Data I/O pin.
Reference voltage
input
VREF I Reference voltage input pin for the A/D converter.
A/D converter AN0 to AN6 I A/D converter analog input pins.
ADTRG
I AD external trigger input pin.
Comparator B IVCMP1, IVCMP3 I Comparator B analog voltage input pins.
IVREF1, IVREF3 I Comparator B reference voltage input pins.
I/O ports P0_0 to P0_7,
P2_0 to P2_7,
P3_0 to P3_7,
P5_0 to P5_6,
P7_0 to P7_2,
P8_0 to P8_7,
P9_0, P9_1
I/O CMOS I/O ports. Each port has an I/O select direction register,
allowing each pin in the port to be directed for input or output
individually.
Any port set to input can be set to use a pull-up resistor or not
by a program.
Port P8 can be used as LED drive ports.
Segment output SEG0 to SEG26 O LCD segment output pins.
Common output COM0 to COM3,
COMEXP
O LCD common output pins.
LCD power supply VL1 I Apply the following voltage: 1 V ≤ VL1 ≤ VCC and VL1 ≤ VL2.
VL2 I Apply the following voltage: VL2 ≤ 5.5 V and VL1 ≤ VL2 ≤ VL3.
VL3 I Apply the following voltage: VL3 ≤ 5.5 V and VL2 ≤ VL3.