DF61654N50FTV Renesas Electronics America, DF61654N50FTV Datasheet - Page 126

• Manufacturer Part Number: DF61654N50FTV
• Description: IC H8SX/1654 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61654N50FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, IrDA, SCI, SmartCard, USB
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 75
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• For Use With: HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 4 Exception Handling
Table 4.3
[Legend]
VBR: Vector base register
Vector table address offset: See table 4.2.
4.3
A reset has priority over any other exception. When the RES pin goes low, all processing halts and
this LSI enters the reset state. To ensure that this LSI is reset, hold the RES pin low for at least 20
ms with the STBY pin driven high when the power is turned on. When operation is in progress,
hold the RES pin low for at least 20 cycles.
The chip can also be reset by overflow of the watchdog timer. For details, see section 13,
Watchdog Timer (WDT).
A reset initializes the internal state of the CPU and the registers of the on-chip peripheral modules.
The interrupt control mode is 0 immediately after a reset.
4.3.1
When the RES pin goes high after being held low for the necessary time, this LSI starts reset
exception handling as follows:
1. The internal state of the CPU and the registers of the on-chip peripheral modules are
2. The reset exception handling vector address is read and transferred to the PC, and program
Figures 4.1 and 4.2 show examples of the reset sequence.
Rev.1.00 Sep. 08, 2005 Page 76 of 966
REJ09B0219-0100
Exception Source
Reset, CPU address error
Other than above
initialized, VBR is cleared to H'00000000, the T bit is cleared to 0 in EXR, and the I bits are
set to 1 in EXR and CCR.
execution starts from the address indicated by the PC.
Reset
Reset Exception Handling
Calculation Method of Exception Handling Vector Table Address
Calculation Method of Vector Table Address
Vector table address = (vector table address offset)
Vector table address = VBR + (vector table address offset)