657
Switching from SCK Pin Function to Port Pin Function:
•
Problem in Operation: When switching the SCK pin function to the output port function (high-
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.
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 16-29)
SCK/port
Data
TE
C/
A
CKE1
CKE0
Bit 7
Bit 6
1. End of transmission
4. Low-level output
3.C/
A
= 0
2.TE= 0
Half-cycle low-level output
Figure 16-29 Operation when Switching from SCK Pin Function to Port Pin Function
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...