HD64F2623FA20J Renesas Electronics America, HD64F2623FA20J Datasheet - Page 116

• Manufacturer Part Number: HD64F2623FA20J
• Description: IC H8S MCU FLASH 256K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2623FA20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-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).
4.2.4
After reset release, MSTPCRA to MSTPCRC are initialized to H'3F, H'FF, and H'FF, respectively,
and all modules except the DTC enter module stop mode. Consequently, on-chip supporting
Rev. 5.00 Jan 10, 2006 page 90 of 1042
REJ09B0275-0500
(1) (3) Reset exception handling vector address (when reset, (1) = H'000000,
(2) (4) Start address (contents of reset exception handling vector address)
(5)
(6)
Interrupts after Reset
State of On-Chip Supporting Modules after Reset Release
RES
Internal
address bus
Internal read
signal
Internal write
signal
Internal data
bus
(3) = H'000002)
Start address ((5) = (2) (4))
First program instruction
Figure 4.3 Reset Sequence (Modes 6 and 7)
(1)
Vector fetch
(2)
High
(4)
(3)
processing
Internal
first program
Prefetch of
instruction
(5)
(6)