HD64F38024DV Renesas Electronics America, HD64F38024DV Datasheet - Page 217

• 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: -

int f(struct S);
void g(void);
struct S{long p;} st;
int x;
int f(struct S s){
}
void g(void)
{
}
Function f:
Parameter Area Size
Linkage Area Size
Local Variable Size
Temporary Size
Register Save Area Size : 0x00000000 Byte(s)
Total Frame Size
Function g:
Parameter Area Size
Linkage Area Size
Local Variable Size
Temporary Size
Register Save Area Size : 0x00000000 Byte(s)
Total Frame Size
Example:
(c) Calculation of heap area size
Source program
The size of the area of heap memory used is the sum of the areas allocated by memory
management library functions (calloc, malloc, realloc, and new) in the C/C++ program.
However, each time a memory management library function is called, either four bytes
(with cpu=H8SXN, cpu=H8SXM, cpu=H8SXA and ptr16 option, cpu=H8SXX and ptr16
option, cpu=2600n, cpu=2000n, cpu=300hn, or cpu=300 specified) or eight bytes (with
cpu=H8SXX without ptr16 option, cpu=H8SXA without ptr16 option, cpu=2600a,
cpu=2000a, or cpu=300ha specified) are used for management purposes; the actual area
used must be calculated including the sizes of these management areas added.
The compiler manages the heap area in units of a memory size specified by the user
(_sbrk_size). The method for specifying _sbrk_size is described in section 9.2.2 (5), C/C++
library function initial settings (_INITLIB). The heap area to be reserved (HEAPSIZE)
should be calculated as follows.
return 0;
x=f(st);
HEAPSIZE = _sbrk_size
(size of area allocated by memory management library functions) + management area
size
HEAPSIZE
_f:
_g:
: 0x00000004 Byte(s)[3]
: 0x00000004 Byte(s)
: 0x00000000 Byte(s)
: 0x00000000 Byte(s)
: 0x00000008 Byte(s)
: 0x00000000 Byte(s)
: 0x00000004 Byte(s)
: 0x00000000 Byte(s)
: 0x00000000 Byte(s)
: 0x00000004 Byte(s)
The group A
SUB.W
RTS
MOV.L
PUSH.L ER0
BSR
ADDS.L #4,SP
MOV.W
RTS
n (n 1)
R0,R0
@_st:32,ER0
_f:8
R0,@_x:32
;[1]
;[2]
_f:
_g:
The group B
SUB.W
RTS
ADD.W
MOV.L
MOV.L
BSR
MOV.W
ADDS.L #4,SP
RTS
0x00000000 Byte(s)
0x00000004 Byte(s)
0x00000000 Byte(s)
0x00000000 Byte(s)
0x00000000 Byte(s)
0x00000004 Byte(s)
0x00000000 Byte(s)
0x00000004 Byte(s)
0x00000000 Byte(s)
0x00000004 Byte(s)[7]
0x00000000 Byte(s)
0x00000008 Byte(s)
R0,R0
#-4:16,R7 ;[4]
@_st:32,ER0
ER0,@SP
_f:8
R0,@_x:32
;[5]
;[6]
203