HD6473837HV Renesas Electronics America, HD6473837HV Datasheet - Page 101
![MCU 3/5V 60K PB-FREE 100-QFP](/photos/12/21/122166/qfp100-g1_pkg_sml.jpg)
HD6473837HV
Manufacturer Part Number
HD6473837HV
Description
MCU 3/5V 60K PB-FREE 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Lr
Datasheet
1.HD6473837HV.pdf
(562 pages)
Specifications of HD6473837HV
Core Processor
H8/300L
Core Size
8-Bit
Speed
5MHz
Connectivity
SCI
Peripherals
LCD, PWM
Number Of I /o
84
Program Memory Size
60KB (60K x 8)
Program Memory Type
OTP
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Figure 3.8 shows the procedure for setting a bit in a port mode register and clearing the interrupt
request flag.
When switching a pin function, mask the interrupt before setting the bit in the port mode register.
After accessing the port mode register, execute at least one instruction (e.g., NOP), then clear the
interrupt request flag from 1 to 0. If the instruction to clear the flag is executed immediately after
the port mode register access without executing an intervening instruction, the flag will not be
cleared.
An alternative method is to avoid the setting of interrupt request flags when pin functions are
switched by keeping the pins at the high level so that the conditions in table 3.5 do not occur.
84
Figure 3.8 Port Mode Register Setting and Interrupt Request Flag Clearing Procedure
Clear interrupt request flag to 0
Set port mode register bit
Execute NOP instruction
CCR I bit
CCR I bit
1
0
Interrupts masked. (Another possibility
is to disable the relevant interrupt in
interrupt enable register 1.)
After setting the port mode register bit,
first execute at least one instruction
(e.g., NOP), then clear the interrupt
request flag to 0
Interrupt mask cleared
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