DF2338VFC25V Renesas Electronics America, DF2338VFC25V Datasheet - Page 328
![IC H8S/2300 MCU FLASH 144QFP](/photos/12/22/122201/df2338vfc25v_sml.jpg)
DF2338VFC25V
Manufacturer Part Number
DF2338VFC25V
Description
IC H8S/2300 MCU FLASH 144QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheets
1.HEWH8E10A.pdf
(19 pages)
2.D12312SVTE25V.pdf
(341 pages)
3.DF2338VFC25V.pdf
(1246 pages)
Specifications of DF2338VFC25V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
106
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 12x10b; D/A 4x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
144-QFP
For Use With
EDK2329 - DEV EVALUATION KIT H8S/2329
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2338VFC25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 3 Processing States
3.3.2
After the RES pin has gone low and the reset state has been entered, reset exception handling
starts when RES goes high again. When reset exception handling starts the CPU fetches a start
address (vector) from the exception vector table and starts program execution from that address.
All interrupts, including NMI, are disabled during reset exception handling and after it ends.
3.3.3
Traces are enabled only in interrupt control modes 2 and 3. Trace mode is entered when the T bit
of EXR is set to 1. When trace mode is established, trace exception handling starts at the end of
each instruction.
At the end of a trace exception-handling sequence, the T bit of EXR is cleared to 0 and trace mode
is cleared. Interrupt masks are not affected.
The T bit saved on the stack retains its value of 1, and when the RTE instruction is executed to
return from the trace exception-handling routine, trace mode is entered again. Trace exception-
handling is not executed at the end of the RTE instruction.
Trace mode is not entered in interrupt control modes 0 and 1, regardless of the state of the T bit.
3.3.4
When interrupt or trap-instruction exception handling begins, the CPU references the stack pointer
(ER7) and pushes the program counter and other control registers onto the stack. Next, the CPU
alters the settings of the interrupt mask bits in the control registers. Then the CPU fetches a start
address (vector) from the exception vector table and execution branches to that address.
Figure 3.3 shows the stack after exception handling ends, for the case of interrupt mode 1 in
advanced mode.
3.3.5
(1) Conflict between Interrupt Generation and Disabling
When an interrupt enable bit is cleared to 0 to disable interrupts, the disabling becomes effective
after execution of the instruction.
When an interrupt enable bit is cleared to 0 by an instruction such as BCLR or MOV, and if an
interrupt is generated during execution of the instruction, the interrupt concerned will still be
Rev. 4.00 Feb 24, 2006 page 312 of 322
REJ09B0139-0400
Reset Exception Handling
Trace
Interrupt Exception Handling and Trap Instruction Exception Handling
Usage Notes
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