DF2134AFA20V Renesas Electronics America, DF2134AFA20V Datasheet - Page 152

• Manufacturer Part Number: DF2134AFA20V
• Description: IC H8S/2100 MCU FLASH 80QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2134AFA20V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 58
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 80-QFP
• For Use With: 3DK2166 - DEV EVAL KIT H8S/2166
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 4 Exception Handling
4.2.3
If an interrupt is accepted after a reset but 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.L #xx:32, SP).
Rev. 4.00 Jun 06, 2006 page 96 of 1004
REJ09B0301-0400
RES
Address bus
RD
WR
D7 to D0
(1) (3) Reset exception vector address ((1) = H'0000, (3) = H'0001)
(2) (4) Start address (contents of reset exception vector address)
(5)
(6)
Note: * 3 program wait states are inserted.
Interrupts after Reset
Start address ((5) = (2) (4))
First program instruction
Figure 4.3 Reset Sequence (Mode 1)
*
(1)
Vector fetch
(2)
High
*
(3)
Internal
processing
(4)
Fetch of
first program
instruction
(5)
*
(6)