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H8/3028F Datasheet(PDF) 540 Page - Renesas Technology Corp

Part # H8/3028F
Description  Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
PDF  923 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3028F Datasheet(HTML) 540 Page - Renesas Technology Corp

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Rev. 2.00, 09/03, page 510 of 890
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 13.23)
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 13.23 Operation when Switching from SCK Pin Function to Port Pin Function



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