HD64F3644H Renesas Electronics America, HD64F3644H Datasheet - Page 97

• Manufacturer Part Number: HD64F3644H
• Description: IC H8 MCU FLASH 32K 64-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3644H

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-QFP
• Package: 64PQFP
• Family Name: H8
• Maximum Speed: 8 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 45
• Interface Type: SCI
• On-chip Adc: 8-chx8-bit
• Number Of Timers: 4
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Figure 3.5 shows a typical interrupt sequence where the program area is in the on-chip ROM and
the stack area is in the on-chip RAM.
SP – 4
SP – 3
SP – 2
SP – 1
SP (R7)
Legend:
PC
PC
CCR:
SP:
Notes:
H
L
:
:
Upper 8 bits of program counter (PC)
Lower 8 bits of program counter (PC)
Condition code register
Stack pointer
2.
1.
Figure 3.4 Stack State after Completion of Interrupt Exception Handling
Register contents must always be saved and restored by word access, starting from
an even-numbered address.
PC shows the address of the first instruction to be executed upon return from the interrupt
handling routine.
Prior to start of interrupt
exception handling
Stack area
saved to stack
PC and CCR
SP (R7)
SP + 1
SP + 2
SP + 3
SP + 4
Rev. 6.00 Sep 12, 2006 page 75 of 526
After completion of interrupt
exception handling
Section 3 Exception Handling
CCR
CCR
PC
PC
H
L
REJ09B0326-0600
Even address