HD64F3048BF25 Renesas Electronics America, HD64F3048BF25 Datasheet - Page 112
HD64F3048BF25
Manufacturer Part Number
HD64F3048BF25
Description
IC H8 MCU FLASH 128K 100QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Datasheet
1.DF3048BF25V.pdf
(903 pages)
Specifications of HD64F3048BF25
Core Processor
H8/300H
Core Size
16-Bit
Speed
8MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, PWM, WDT
Number Of I /o
70
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD64F3048BF25
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Part Number:
HD64F3048BF25V
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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Section 4 Exception Handling
4.2
4.2.1
A reset is the highest-priority exception. When the RES pin goes low, all processing halts and the
chip enters the reset state. A reset initializes the internal state of the CPU and the registers of the
on-chip supporting modules. Reset exception handling begins when the RES pin changes from
low to high.
The chip can also be reset by overflow of the watchdog timer. For details see section 12,
Watchdog Timer.
4.2.2
The chip enters the reset state when the RES pin goes low.
To ensure that the chip is reset properly, hold the RES pin low for at least 20 ms at power-up. To
reset the chip during operation, hold the RES pin low for at least 20 system clock ( ) cycles. See
appendix D.2, Pin States at Reset, for the states of the pins in the reset state.
When the RES pin goes high after being held low for the necessary time, the chip starts reset
exception handling as follows.
Figure 4.2 shows the reset sequence in modes 1 and 3. Figure 4.3 shows the reset sequence in
modes 2 and 4. Figure 4.4 shows the reset sequence in modes 5, 6, and 7.
Rev. 3.00 Sep 27, 2006 page 84 of 872
REJ09B0325-0300
The internal state of the CPU and the registers of the on-chip supporting modules are
initialized, and the I bit is set to 1 in CCR.
The contents of the reset vector address (H'0000 to H'0003) are read, and program execution
starts from the address indicated in the vector address.
Reset
Overview
Reset Sequence
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