HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 52
![no-image](/images/no-image-200.jpg)
HD64570
Manufacturer Part Number
HD64570
Description
Serial Communications Adaptor
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD64570.pdf
(469 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64570CP
Manufacturer:
RENESAS
Quantity:
6 500
Company:
Part Number:
HD64570CP
Manufacturer:
HIT
Quantity:
5 510
Company:
Part Number:
HD64570CP
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
HD64570CP16
Manufacturer:
HIT
Quantity:
5 510
Company:
Part Number:
HD64570CP16
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
HD64570F
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
HD64570F16
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
HD64570F16
Manufacturer:
HITACHI/日立
Quantity:
20 000
Company:
Part Number:
HD64570F16V
Manufacturer:
INFINEON
Quantity:
12 000
- Current page: 52 of 469
- Download datasheet (3Mb)
1.7.13
Interrupt Control
SCA interrupts are controlled by three interrupt status registers (ISR0, ISR1, ISR2) containing
flags for 20 interrupt sources, three interrupt enable registers (IER0, IER1, IER2) which can mask
the interrupt source flags individually, and one interrupt control register (ITCR) (figure 1.24).
The interrupt sources are located in corresponding functional modules (MSCI, DMAC, timers).
When an interrupt source that is not masked becomes active, the SCA activates INT to request an
MPU interrupt. When the MPU activates INTA in response, the SCA begins an acknowledge
cycle and outputs an interrupt vector according to register settings.
The interrupt control register (ITCR) selects the interrupt priority order, the type of acknowledge
cycle, and the type of vector output. ITCR bits IAK0 and IAK1 select the non-acknowledge, single
acknowledge, or double acknowledge cycle. Nonacknowledge means that the SCA does not output
an interrupt vector when INTA is activated. Single acknowledge means that the SCA outputs a
vector the first time INTA is activated. Double acknowledge means that the SCA outputs a vector
the second time INTA is activated.
ITCR bit VOS selects whether to output the contents of the interrupt vector register (IVR) or
interrupt modified vector register (IMVR) as the vector. Any value can be set in IVR for
unmodified output as the vector in the acknowledge cycle. The highest two bits of IMVR can be
set to any value, but the lower six bits hold a hardware-generated code representing the interrupt
source. If multiple interrupt sources are active simultaneously, IMVR holds the code of the source
with the highest priority. ITCR bit IPC can switch the relative priority of the MSCI and DMAC.
See figures 1.25 to 1.27 for interrupt logic flow for MSCI, DMAC, and timer modules.
Rev. 0, 07/98, page 36 of 453
Related parts for HD64570
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![HD6433044](/images/no-image3.png)
Part Number:
Description:
(HD64 Series) Hitachi Single-Chip Microcomputer
Manufacturer:
Hitachi Semiconductor
Datasheet:
![2SK1254S](/images/no-image3.png)
Part Number:
Description:
Silicon N-Channel MOS FET
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SK134](/images/no-image3.png)
Part Number:
Description:
LOW FREQUENCY POWER AMPLIFIER
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SK1401A](/images/no-image3.png)
Part Number:
Description:
Silicon N-Channel MOS FET
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SK1516](/images/no-image3.png)
Part Number:
Description:
Silicon N-Channel MOS FET
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SK1618](/images/no-image3.png)
Part Number:
Description:
Silicon N-Channel MOS FET
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SK176](/images/no-image3.png)
Part Number:
Description:
Silicon N-Channel MOS FET
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SK187](/images/no-image3.png)
Part Number:
Description:
SILICON N-CHANNEL JUNCTION FET LOW FREQUECY LOW NOISE AMPLIFIER
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SJ130S](/images/no-image3.png)
Part Number:
Description:
Silicon P-Channel MOS FET
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SJ181S](/images/no-image3.png)
Part Number:
Description:
Silicon P-Channel MOS FET
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SJ182L](/images/no-image3.png)
Part Number:
Description:
SILICON SPEED POWER SWITCHING
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SJ220L](/images/no-image3.png)
Part Number:
Description:
SILICON P-CHANNEL MOS FET HIGH SPEED POWER SWITCHING
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SJ245L](/images/no-image3.png)
Part Number:
Description:
SILICON P-CHANNEL MOS FET
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SJ280L](/images/no-image3.png)
Part Number:
Description:
SILICON P-CHANNEL MOS FET
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet:
![2SJ319S](/images/no-image3.png)
Part Number:
Description:
Silicon P-Channel MOS FET
Manufacturer:
HITACHI [Hitachi Semiconductor]
Datasheet: