Renesas R8C/Tiny Series 用户手册

Table 6-9 below describes the function of the option links associated with serial configuration. The default configuration is indicated by

BOLD text.

Option Link Settings

Reference

Function

Fitted

Alternative (Removed)

Related To

R36 Analog

configuration

PIN 57 connected to ADPOT

PIN 57 disconnected from ADPOT

R66

Analog configuration

PIN 57 connected to AN8 on JA5

PIN 57 disconnected from AN8

R36

R40 Analog

configuration

UC_VCC supplies the reference

voltage for Analog section.

CON_VREF can be used to supply the

reference voltage for Analog section.

R41

Analog configuration

CON_VREF supplies the reference

voltage for Analog section.

UC_VCC can be used to supply the

reference voltage for Analog section.

R40

Table 6-9: Analog configuration links

Table 6-10

below describes the function of the option links associated with other options. The default configuration is indicated by BOLD

text.

Option Link Settings

Reference

Function

Fitted

Alternative (Removed)

Related To

R49 Pin

function

select

PIN 76 connected to AN0 on JA1

PIN 76 disconnected from on JA1

R58

Pin function select

PIN 76 connected to DA1 on JA1

PIN 76 disconnected from DA1

R49

R56 Pin

function

select

PIN 74 connected to AN1 on JA

PIN 74 disconnected from AN1 on JA

R59

Pin function select

PIN 74 connected to DA0 on JA

PIN 74 disconnected from DA0

R56

R63

Pin function select

PIN 46 connected to INT3n on JA1

PIN 46 disconnected from INT3n

R67

R67 Pin

function

select

PIN 46 connected to RXD1 on JA6 PIN 46 disconnected from RXD1

R63

R57

Pin function select

PIN 73 connected to AN2 on JA1

PIN 73 disconnected from AN2

R62

R62 Pin

function

select

PIN 73 connected to CLK1 on JA6 PIN 73 disconnected from CLK1

R57

Table 6-10: Pin function configuration links

6.7. Oscillator Sources

A crystal oscillator is fitted on the board and used to supply the main/sub clock input to the Renesas microcontroller.

Table 6-10 details the oscillators that are fitted and alternative footprints provided on this board:

Component

Crystal (X1)

Fitted

20 MHz (HC/49U package)

Sub clock (X2)

Fitted

32.768 kHz (90SMX package)

Table 6-10: Oscillator Configuration

6.8. Reset Circuit

The CPU Board includes a simple latch circuit that links the mode selection and reset circuit. This provides an easy method for swapping

the device between Boot Mode and Single chip mode. This circuit is not required on customers’ boards as it is intended for providing

easy evaluation of the operating modes of the device on the Renesas Starter Kit. Please refer to the hardware manual for more

information on the requirements of the reset circuit.