HD6417032F20V Renesas Electronics America, HD6417032F20V Datasheet - Page 123
HD6417032F20V
Manufacturer Part Number
HD6417032F20V
Description
SH1 ROMLESS LEAD FREE
Manufacturer
Renesas Electronics America
Series
SuperH® SH7030r
Datasheet
1.HD6417034AFI20.pdf
(689 pages)
Specifications of HD6417032F20V
Core Processor
SH-1
Core Size
32-Bit
Speed
20MHz
Connectivity
EBI/EMI, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
32
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
112-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417032F20V
Manufacturer:
TI
Quantity:
201
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6.5.3
If a break is attempted at the task A return destination instruction fetch, task B is activated before
the UBC interrupt by interrupt B generated during task A processing, and the UBC interrupt is
handled after the interrupt B exception handling.
1. Cause
2. Remedy
The SH7032/SH7034 chip operates as follows.
It actually takes at least two cycles for the UBC interrupt generated by the address 0x00011a0c
instruction fetch cycle to be sent to the interrupt controller and interrupt exception handling to
begin. However, as shown in figure 6.3, when the UBC interrupt is generated, previously
generated interrupt B initiated by task B is accepted first, and the UBC interrupt is accepted
after completion of the interrupt B exception handling.
There is no way of preventing this operation by hardware. A software solution, such as the use
of a flag, must be employed.
Break
condition
Instruction Fetch Break
0x02000030
0x00011a0a
0x00011a0c
(0xf000978 Overrun fetch)
<Address>
0xf000974
Interrupt B accepted
Instruction replaced by interrupt
exception handling
Task B first instruction fetch
UBC first instruction fetch
Overrun fetch
<Description>
(instruction replaced by interrupt
exception handling)
F D
Figure 6.3 UBC Operation
F
E E
Interrupt exception
handling
M M E
UBC interrupt accepted
M E E
Rev. 7.00 Jan 31, 2006 page 95 of 658
Section 6 User Break Controller (UBC)
F
D E E
f
Interrupt exception
M M
handling
REJ09B0272-0700
E
M
E E
F
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