upd17072 Renesas Electronics Corporation., upd17072 Datasheet - Page 77
upd17072
Manufacturer Part Number
upd17072
Description
4-bit Single-chip Microcontroller With Hardware For Digital Tuning System
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD17072.pdf
(226 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 77 of 226
- Download datasheet (2Mb)
11.7 Operations after Accepting Interrupt
not involve execution of an ordinary instruction. This instruction cycle is called an interrupt cycle.
an interrupt.
(1) The interrupt enable flip-flop and the interrupt request flag corresponding to the accepted interrupt request
(2) The contents of the stack pointer are decremented by one.
(3) The contents of the program counter are saved to the address stack register specified by the stack pointer.
(4) The lower 1 bit of the bank register (BANK) is saved to the interrupt stack.
(5) The contents of the vector address generator corresponding to the accepted interrupt are transferred to the
When an interrupt has been accepted, the following processing is automatically executed in sequence:
The above steps (1) through (5) are executed in one special instruction cycle (53.3 s: normal operation) that does
Therefore, it takes the CPU one instruction cycle to branch to the corresponding vector address after it has accepted
are cleared to “0”. Therefore, the interrupt is disabled.
At this time, the content of the program counter is the program memory address next to the one at which the
interrupt has been accepted.
For example, if the interrupt has been accepted while a branch instruction is executed, the branch destination
address is loaded to the program counter. If a subroutine call instruction is executed when the interrupt has
been accepted, the address that called the subroutine is loaded to the program counter. When the skip
condition of a skip instruction is satisfied, the next instruction is treated as a no-operation instruction (“NOP”)
and then the interrupt is accepted. Consequently, the contents of the program counter are the skipped address.
Caution At this time, the contents of the program status word (PSWORD) are not saved. Save the
program counter. Therefore, the execution branches to an interrupt service routine.
contents of the program status word by software as necessary.
PD17072,17073
77
Related parts for upd17072
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Renesas Technology Corp [Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series]
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
RENESAS MCU M16C FAMILY / M16C/Tiny SERIES
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Renesas Starter Kit for RX210
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
EVALBOARD/Renesas StarterKit for RX630
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
EVALBOARD/Renesas Starter Kit+ for RX63N
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
EVALBOARD/Renesas Starter Kit
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
FLASH PROGRAMMER FOR RENESAS MICROCONTROLLERS
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet: