HD64F38024DV Renesas Electronics America, HD64F38024DV Datasheet - Page 230

• 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 open(char *name, int mode, int flg)
Description
216
(b) Specifications of low-level interface routines
Parameters
Based on the information set using the open routine, all subsequent I/O (read and write
routines) and read/write positioning (lseek routine) is performed.
When output buffering is being used, the close routine should be executed to kick out the
contents of the buffer to the actual file, so that the data area set by the open routine can be
reused.
In this section, specifications for creation of low-level interface routines are described. For
each routine, the interface for calling the routine, its operation, and any important
information for using the routine are described.
The interface for the routines is indicated using the following format. Low-level interface
routines should always be given a prototype declaration. When declared in a C++ program,
extern “C” should be added.
(Routine name)
Description
Return value
In the case of a disk file, the byte offset from the start of the file to the position for
reading or writing
Prepares for operations on the file corresponding to the filename of the first
parameter. In the open routine, the file instance (console, printer, disk file,
etc.) must be determined in order to enable reading or writing at a later time.
The file instance must be accessed using the file number returned by the open
routine each time reading or writing is to be performed.
The second parameter, mode, specifies processing to be performed when the
file is opened. The meaning of each bit of this parameter is as follows.
(Name)
(The name of the parameter
appearing in the interface)
(A summary of the routine operations is given)
Normal: (The meaning of the return value on normal termination is
explained)
Error: (The return value when an error occurs is given)
(Meaning)
(The meaning of the value
passed as an parameter)
Concise explanations
Opens file