M16C26 Datasheet, PDF (54/239 Pages) Renesas Technology Corp – 16-BIT CMOS SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES

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Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
Interrupts
M16C/26 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Variable vector tables
The addresses in the variable vector table can be modified by user’s settings. The first address of the
variable vector table is specified by the user using the interrupt table register (INTB). The subsequent
256-byte addresses becomes the area for the variable vector tables. A vector consists of four bytes.
Set the first address of the interrupt routine in the corresponding vector. Table 1.9.2 shows the
interrupts assigned to the variable vector table and the vector addresses.
Table 1.9.2. Interrupts assigned to the variable vector tables and addresses of vector tables
Software interrupt number
Software interrupt number 0
Vector table address
Address (L) to address (H)
Interrupt source
+0 to +3 (Note 1)
BRK instruction
Remarks
Cannot be masked I flag
Software interrupt number 4
Software interrupt number 5
Software interrupt number 6
Software interrupt number 7
Software interrupt number 8
+16 to +19 (Note 1)
+20 to +23 (Note 1)
+24 to +27 (Note 1)
+28 to +31 (Note 1)
+32 to +35 (Note 1)
INT3
Reserved
Reserved
Reserved
INT5
Software interrupt number 9
+36 to +39 (Note 1) INT4
Software interrupt number 10 +40 to +43 (Note 1) UART 2 bus collision detection
Software interrupt number 11 +44 to +47 (Note 1) DMA0
Software interrupt number 12 +48 to +51 (Note 1) DMA1
Software interrupt number 13 +52 to +55 (Note 1) Key input interrupt
Software interrupt number 14 +56 to +59 (Note 1) A-D
Software interrupt number 15 +60 to +63 (Note 1) UART2 transmit/NACK2 (Note 2)
Software interrupt number 16 +64 to +67 (Note 1) UART2 receive/ACK2 (Note 2)
Software interrupt number 17 +68 to +71 (Note 1) UART0 transmit
Software interrupt number 18 +72 to +75 (Note 1) UART0 receive
Software interrupt number 19 +76 to +79 (Note 1) UART1 transmit
Software interrupt number 20 +80 to +83 (Note 1) UART1 receive
Software interrupt number 21 +84 to +87 (Note 1) Timer A0
Software interrupt number 22 +88 to +91 (Note 1) Timer A1
Software interrupt number 23 +92 to +95 (Note 1) Timer A2
Software interrupt number 24 +96 to +99 (Note 1) Timer A3
Software interrupt number 25 +100 to +103 (Note 1) Timer A4
Software interrupt number 26 +104 to +107 (Note 1) Timer B0
Software interrupt number 27 +108 to +111 (Note 1) Timer B1
Software interrupt number 28 +112 to +115 (Note 1) Timer B2
Software interrupt number 29
Software interrupt number 30
+116 to +119 (Note 1)
+120 to +123 (Note 1)
INT0
INT1
Software interrupt number 31 +124 to +127 (Note 1) _Reserved
Software interrupt number 32
to
Software interrupt number 63
+128 to +131 (Note 1)
to
+252 to +255 (Note 1)
Software interrupt
Cannot be masked I flag
Note 1: Address relative to address specified in interrupt table register (INTB).
Note 2: When IIC mode is selected, NACK and ACK interrupts are selected.
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