HD64F38024DV Renesas Electronics America, HD64F38024DV Datasheet - Page 260

• Manufacturer Part Number: HD64F38024DV
• Description: IC H8/SLP MCU FLASH 80QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300L SLPr

Specifications of HD64F38024DV

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: SCI
• Peripherals: LCD, PWM, WDT
• Number Of I /o: 51
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

9.3.2
four collections of rules, explained below, must be followed on the assembly program side.
(1) Rules concerning the stack pointer
(2) Rules concerning allocation and release of stack frames
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When calling functions in both directions between a C/C++ program and an assembly program,
Rules concerning the stack pointer
Rules concerning allocation and release of stack frames
Rules concerning registers
Rules concerning settings and referencing parameters and return values
No valid data must be stored in the stack area below (in the direction toward address 0) the
address indicated by the stack pointer. The data may become corrupted by interrupt processing.
At the time of a function call (after execution of a JSR or BSR instruction), the stack pointer
points to a return PC area. The calling function allocates area above this area and sets data.
When the function returns, the return PC area is released by the called function. This is
normally performed using the RTS instruction. Areas at addresses above this (return value
addresses and parameter areas) are released by the calling function.
SP
Immediately after functin call
Function Calling Interface
Parameter area
Return value
address
Return PC
Figure 9.8 Rule for Allocation and Release of Stack Frames
0
Lower address
Upper address
SP
Immediately afer returning
from a function
Parameter area
Return value
address
0
Lower address
Upper address