DF36034GFPJV Renesas Electronics America, DF36034GFPJV Datasheet - Page 99
![MCU 3/5V 32K J TEMP PB-FREE 64LQ](/photos/28/61/286100/64-lqfp__plqp0064kb-a_sml.jpg)
DF36034GFPJV
Manufacturer Part Number
DF36034GFPJV
Description
MCU 3/5V 32K J TEMP PB-FREE 64LQ
Manufacturer
Renesas Electronics America
Series
H8® H8/300H Tinyr
Specifications of DF36034GFPJV
Core Processor
H8/300H
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, SCI, SSU
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
45
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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3.5
3.5.1
If an interrupt is accepted after a reset and before the stack pointer (SP) is initialized, the 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. Since the first instruction of a program is
always executed immediately after the reset state ends, make sure that this instruction initializes
the stack pointer (example: MOV.W #xx: 16, SP).
3.5.2
When word data is accessed, the least significant bit of the address is regarded as 0. Access to the
stack always takes place in word size, so the stack pointer (SP: R7) should never indicate an odd
address. Use PUSH Rn (MOV.W Rn, @–SP) or POP Rn (MOV.W @SP+, Rn) to save or restore
register values.
3.5.3
When a port mode register is rewritten to switch the functions of external interrupt pins, IRQ3 to
IRQ0, and WKP5 to WKP0, the interrupt request flag may be set to 1.
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.
Figure 3.4 shows a port mode register setting and interrupt request flag clearing procedure.
Figure 3.4 Port Mode Register Setting and Interrupt Request Flag Clearing Procedure
Usage Notes
Interrupts after Reset
Notes on Stack Area Use
Notes on Rewriting Port Mode Registers
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
Rev. 4.00 Mar. 15, 2006 Page 65 of 556
Section 3 Exception Handling
REJ09B0026-0400
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