HD64F38024DV Renesas Electronics America, HD64F38024DV Datasheet - Page 359

• 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: -

Example:
// -cpu=h8sxa
int g_x;
struct ST {
}
enum color {BLUE, GREEN, YELLOW, RED};
void func(void)
{
6. Register convention
int
char b;
char c;
g_st;
int x;
int y;
struct ST l_st;
__asm{
• The register convention of an _ _asm block is similar to that of a
• Even though the MAC register is used in an _ _asm block, the compiler
// The __asm block saves the values of registers used
// in func.
// y
// l_st : local, struct, offset from SP = 10
mov.w
mov.l
mov.w
function. Even though a caller-save register such as ER0, ER1 or
(ER2) is used in an _ _asm block, the register is not saved or restored at
the entry or exit of the block. If a callee-save register such as (ER2,)
ER3, ER4, ER5 or ER6 is used in an _ _asm block, the compiler
automatically generates code to save and restore the register at the entry
and exit of the block, respectively. It is assumed that the SP is
nchanged from the entry to the exit of an _ _asm block. After making a
function call changes the SP, put back the SP to the original value
before the call is made.
never generates code to save/restore the MAC register at the
entrance/exit of the _ _asm block. When the MAC register is changed
inside an _ _asm block and if the value of the MAC register should be
preserved over the _ _asm block, add code to save/restore the MAC
register in the _ _asm block. The compiler does not recognize that the
MAC register is written even when the macsave option is specified to
an interrupt function.
a;
: local, scalar, offset from SP = 8
@(y,sp),r0
#y,er1
@(l_st.b, sp),r0
// Places local variables on the stack
/* Image of actual code */
/* sub.w #6,r7
/* stm.l (er2-er3),@-sp */
/* mov.l #8,er1
/* mov.w @(12,sp),r0 */
/* mov.w @(8,sp)r0
*/
*/
*/
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