HD6413008VF25 Datasheet, PDF (451/688 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Normal operation
Software
standby
13. Smart Card Interface
Normal operation
123
4 5 6 1' 2' 3'
Figure 13.10 Procedure for Stopping and Restarting the Clock
Use the following procedure to secure the clock duty cycle after powering on.
1. The initial state is port input and high impedance. Use pull-up or pull-down resistors to fix the
potential.
2. Fix at the output specified by the CKE1 bit in SCR.
3. Set SMR and SCMR, and switch to smart card interface mode operation.
4. Set the CKE0 bit to 1 in SCR to start clock output.
Rev.4.00 Aug. 20, 2007 Page 405 of 638
REJ09B0395-0400