Interrupt Sources; Ibfi1, Ibfi2, Ibfi3, And Erri; Smi, Hirq1, Hirq6, Hirq9, Hirq10, Hirq11, And Hirq12; Figure 15.8 Hirq Flowchart (Example Of Channel 1) - Renesas H8S/2111B Hardware Manual

Bit single-chip microcomputer h8s family / h8s/2100 series
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Write 1 to IRQ1E1
No
No

Figure 15.8 HIRQ Flowchart (Example of Channel 1)

Rev. 1.00, 05/04, page 410 of 544
Slave CPU
ODR1 write
OBF1 = 0?
Yes
All bytes
transferred?
Yes
SERIRQ IRQ1 output
SERIRQ IRQ1
source clearance
Master CPU
Interrupt initiation
ODR1 read
Hardware operation
Software operation

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