h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 457

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

13.9.7
• Problem in Operation: When DDR and DR are set to 1, SCI clock output is used in clocked
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 13.38)
synchronous mode, and the SCK pin is changed to the port pin while transmission is ended,
port output is enabled after low-level output occurs for one half-cycle.
When switching the SCK pin to the port pin by making the following settings while DDR = 1,
DR = 1, C/A = 1, CKE1 = 0, CKE0 = 0, and TE = 1, low-level output occurs for one half-
cycle.
SCK/port
Data
TE
C/A
CKE1
CKE0
Notes when Switching from SCK Pin to Port Pin
Figure 13.38 Operation when Switching from SCK Pin to Port Pin
Bit 6
Bit 7
1. End of transmission
2. TE = 0
3. C/A = 0
Section 13 Serial Communication Interface (SCI)
4. Low-level output
Half-cycle low-level output
Rev. 2.00 Dec. 05, 2005 Page 419 of 724
REJ09B0200-0200