HD64F38024DV Renesas Electronics America, HD64F38024DV Datasheet - Page 218
HD64F38024DV
Manufacturer Part Number
HD64F38024DV
Description
IC H8/SLP MCU FLASH 80QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300L SLPr
Datasheets
1.US38024-BAG1.pdf
(684 pages)
2.DF36012GFYV.pdf
(1021 pages)
3.DF38102HV.pdf
(145 pages)
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
-
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Memory areas released using the free function or delete operator (C++) in the memory
management library functions are reused by memory management library functions to secure
memory; but if allocation is repeated, it is possible that requests for large memory areas cannot be
satisfied, even when there is sufficient free memory available, due to the fact that free memory is
broken up into smaller fragments. In order to avoid such occurrences, large memory areas should
be secured immediately after the start of program execution whenever possible. In addition, the
sizes of data areas which are freed and reused should be made uniform as much as possible.
204
(d) Dynamic memory area allocation
I/O library functions use memory management library functions for internal processing.
The size of memory allocated during I/O operations is:
With cpu=H8SXN, H8SXM, H8SXA (with ptr16 option), H8SXX (with ptr option), 2600n,
2000n, 300hn, 300 specified, 514 bytes x (maximum number of files open simultaneously)
With cpu=H8SXA (without ptr16 option), H8SXX (without ptr16 option), 2600a, 2000a,
300ha specified, 516 bytes x (maximum number of files open simultaneously)
Dynamic areas are allocated in RAM.
The location for allocation of stack memory is determined by setting the uppermost address
of the stack section to the SP (stack pointer) in the reset routine on program startup.
By using _ _entry (or #pragma entry) and #pragma stacksize, the C/C++ compiler
automatically creates the stack area (S section) and outputs the SP initial setting code in the
reset program.
The location for heap memory is determined by the initial settings for low-level interface
routines (sbrk).
Details of each of these appear in section 9.2.2 (2), Initial settings (PowerON_Reset), and
section 9.2.2 (7), Low-level interface routines, respectively.
Caution
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