HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 94
HD6477021X20V
Manufacturer Part Number
HD6477021X20V
Description
MCU 5V 32K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7020r
Datasheet
1.HD6417020SVX12IV.pdf
(511 pages)
Specifications of HD6477021X20V
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 Size
32KB (32K x 8)
Program Memory Type
OTP
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6477021X20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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5.5
Table 5.5 indicates the interrupt response time, which is the time from the occurrence of an
interrupt request until the interrupt exception processing starts and fetching of the first instruction
of the interrupt service routine begins. Figure 5.4 shows the pipeline when an IRQ interrupt is
accepted.
Table 5.5
Item
Interrupt priority decision
and comparison with SR
mask bit
Wait for completion of
sequence currently being
executed by CPU
Time from interrupt
exception processing
(saving PC and SR and
fetching vector address)
until fetching of first
instruction of interrupt
service routine starts
Interrupt
response
Notes: m1–m4 are the number of states needed for the following memory accesses:
m1: SR save cycle (long word write)
m2: PC save cycle (long word write)
m3: Vector address read cycle (long word read)
m4: Fetch top instruction of interrupt service routine
Interrupt Response Time
Interrupt Response Time
Total
Minimum
Maximum
NMI or On-Chip
Interrupt
2
X ( 0)
5 + m1 + m2 + m3
7 + m1 + m2 + m3
10
11 + 2(m1 + m2 +
m3) + m4
Number of States
IRQ
3
8 + m1 + m2 + m3
11
12 + 2(m1 + m2 +
m3) + m4
Notes
The longest sequence is the
interrupt or address error
exception processing
sequence: X = 4 + m1 + m2
+ m3 + m4. If an interrupt-
masking instruction follows,
however, the time may be
longer.
0.50–0.55 s at 20 MHz
(m1 = m2 = m3 = m4) 0.90–
0.95 s at 20 MHz
RENESAS 73
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