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R8C28 Datasheet(PDF) 86 Page - Renesas Technology Corp

Part # R8C28
Description  RENESAS 16-BIT SINGLE-CHIP MCU R8C FAMILY / R8C/2x SERIES
PDF  473 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

R8C28 Datasheet(HTML) 86 Page - Renesas Technology Corp

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R8C/28 Group, R8C/29 Group
7. Programmable I/O Ports
Rev.2.10
Sep 26, 2008
Page 67 of 441
REJ09B0279-0210
NOTES:
1. Pulled up by setting the PU11 bit in the PUR1 register to 1.
2. Set the U1PINSEL bit in the PMR register to 1.
X: 0 or 1
NOTE:
1. For N, D version only.
Table 7.22
Port P4_2/VREF
Register
ADCON1
Function
Bit
VCUT
Setting
Value
0
Input port
1
Input port/VREF input
Table 7.23
Port P4_5/INT0/(RXD1)
Register
PD4
INTEN
PINSR1
Function
Bit
PD4_5
INT0EN
UART1SEL1
UART1SEL0
Setting
Value
0
0
Other than 01b
Input port(1)
1
0
Other than 01b
Output port
0
1
Other than 01b
INT0 input(1)
00
0
1
RXD1(1, 2)
Table 7.24
Port P4_6/XIN/XCIN
Register
CM0
CM1
Circuit specifications
Function
Bit
CM01
CM04
CM05
CM13
CM12
CM11
CM10
Oscillation
buffer
Feedback
resistor
Setting
Value
X0
1
0
X
X0
OFF
−
Input port
0X
0
1X
0
0
ON
ON
XIN clock oscillation (on-chip
feedback resistor enabled)
1ON
OFF
XIN clock oscillation (on-chip
feedback resistor disabled)
1
0
OFF
ON
External clock input
0OFF
ON
XIN clock oscillation stop (on-
chip feedback resistor enabled)
1OFF
OFF
XIN clock oscillation stop (on-
chip feedback resistor disabled)
11
OFF
OFF
XIN clock oscillation stop (stop
mode)
1
1
XX
0
X
0
ON
ON
XCIN clock oscillation (on-chip
feedback resistor enabled)(1)
1ON
OFF
XCIN clock oscillation (on-chip
feedback resistor disabled)(1)
0
0OFF
ON
External XCIN clock input(1)
0OFF
ON
XCIN clock oscillation stop (on-
chip feedback resistor
enabled)(1)
1OFF
OFF
XCIN clock oscillation stop (on-
chip feedback resistor
disabled)(1)
11
OFF
OFF
XCIN clock oscillation stop
(stop mode)(1)



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