HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 425

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Switching from SCK Pin Function to Port Pin Function:
• Problem in Operation: When switching the SCK pin function to the output port function (high-
1. End of serial data transmission
2. TE bit = 0
3. C/A bit = 0 ... switchover to port output
4. Occurrence of low-level output (see figure 12.23)
SCK/port
Data
TE
C/A
CKE1
CKE0
Figure 12.23 Operation when Switching from SCK Pin Function to Port Pin Function
level output) by making the following settings while DDR = 1, DR = 1, C/A = 1, CKE1 = 0,
CKE0 = 0, and TE = 1 (synchronous mode), low-level output occurs for one half-cycle.
Bit 6
Bit 7
1. End of transmission
2.TE = 0
3.C/A = 0
Rev.4.00 Aug. 20, 2007 Page 381 of 638
4. Low-level output
Half-cycle low-level output
12. Serial Communication Interface
REJ09B0395-0400