Technical information

Section 4 User System Interface Circuits
Rev. 2.00 Feb. 18, 2009 Page 85 of 94
REJ10J1938-0200
Section 4 User System Interface Circuits
4.1 User System Interface Circuits
Figures 4.1 through 4.11 show user system interface circuits. Use them as a reference to determine
the value of the pull-up resistance.
(1) User system interface circuits for SH72546RFCC, SH72544R, or SH72543R
MCU
User system
MD4
MD3
MD2
MD1
MD0
MD_CLK1
MD_CLK0
MD_CLKP
MD4
MD3
MD2
MD1
MD0
MD_CLK1
MD_CLK0
MD_CLKP
EP1S20F
Vcc
47 kΩ
Figure 4.1 User System Interface Circuits for SH72546RFCC, SH72544R, or SH72543R (1)
_WDTOVF _WDTOVF
MCU
User system
EP1S20F
Figure 4.2 User System Interface Circuits for SH72546RFCC, SH72544R, or SH72543R (2)