HD6473837FV Renesas Electronics America, HD6473837FV Datasheet - Page 80
HD6473837FV
Manufacturer Part Number
HD6473837FV
Description
IC H8/3837 MCU FLASH 100QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Lr
Datasheet
1.HD6473837HV.pdf
(562 pages)
Specifications of HD6473837FV
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
Eeprom Size
-
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-BQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6473837FV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
HD6473837FV
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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3.1
Exception handling is performed in the H8/3834 Series when a reset or interrupt occurs. Table 3.1
shows the priorities of these two types of exception handling.
Table 3.1
Priority
High
Low
3.2
3.2.1
A reset is the highest-priority exception. The internal state of the CPU and the registers of the on-
chip peripheral modules are initialized.
3.2.2
As soon as the RES pin goes low, all processing is stopped and the H8/3834 enters the reset state.
To make sure the chip is reset properly, observe the following precautions.
If the MD0 pin is at the high level, reset exception handling begins when the RES pin is held low
for a given period, then returned to the high level. If the MD0 pin is low, however, when the RES
pin is held low for a given period and then returned to high level, the reset is not cleared
immediately. First the MD0 pin must go from low to high, then after 8,192 clock cycles the reset
is cleared and reset exception handling begins.
At power on: Hold the RES pin low until the clock pulse generator output stabilizes.
Resetting during operation: Hold the RES pin low for at least 10 system clock cycles.
Overview
Reset
Overview
Reset Sequence
Exception Source
Reset
Interrupt
Exception Handling Types and Priorities
Section 3 Exception Handling
Time of Start of Exception Handling
Exception handling starts as soon as the reset state is cleared
When an interrupt is requested, exception handling starts
after execution of the present instruction or the exception
handling in progress is completed
63
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