DF3026X25V Renesas Electronics America, DF3026X25V Datasheet - Page 117
![MCU 3V 256K PB-FREE 100-TQFP](/photos/28/61/286123/100-tqfp__100-vqfp_sml.jpg)
DF3026X25V
Manufacturer Part Number
DF3026X25V
Description
MCU 3V 256K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of DF3026X25V
Core Processor
H8/300H
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
PWM, WDT
Number Of I /o
70
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF3026X25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 117 of 843
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4.2.3
If an interrupt is accepted after a reset but before the stack pointer (SP) is initialized, PC and CCR
will not be saved correctly, leading to a program crash. To prevent this, all interrupt requests,
including NMI, are disabled immediately after a reset exception handling. The first instruction of
the program is always executed immediately after the reset state ends. This instruction should
initialize the stack pointer (example: MOV.L #xx:32, SP).
4.3
Interrupt exception handling can be requested by seven external sources (NMI, IRQ
27 internal sources in the on-chip supporting modules. Figure 4.5 classifies the interrupt sources
and indicates the number of interrupts of each type.
RES
Internal
address bus
Internal
read signal
Internal
write signal
Internal
data bus
(16 bits wide)
Interrupts after Reset
Interrupts
(1) Address of reset exception handling vector (H'0000)
(2) Start address (contents of reset exception handling vector address)
(3) First instruction of program
Figure 4.4 Reset Sequence (Mode 6)
Vector fetch
(2)
(1)
Internal
processing
Rev. 2.00 Sep 20, 2005 page 77 of 800
Prefetch of
first program
instruction
Section 4 Exception Handling
(3)
(2)
REJ09B0260-0200
0
to IRQ
5
), and
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