SH7262 datasheet(25/45 Pages) RENESAS

25 / 45 page

SH7262/SH7264 Group

High-speed Read/Write Serial Flash Memory

Using the Renesas Serial Peripheral Interface

REJ06B0889-0100/Rev.1.00

June 2009

Page 25 of 45

3.7

Sample Program Listing "serial_flash.c" (4/19)

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

/*""FUNC COMMENT""**************************************************************

* ID

* Outline

: Chip erase

*------------------------------------------------------------------------------

* Include

*------------------------------------------------------------------------------

* Declaration

: void sf_chip_erase(void);

*------------------------------------------------------------------------------

* Description

: Erases all bits in serial flash memory.

: Before erasing or programming, issue the Write Enable command.

: After erasing or programming, make sure to check the status of

: serial flash memory if it is not busy.

*------------------------------------------------------------------------------

* Argument

: void

*------------------------------------------------------------------------------

* Return Value : void

*------------------------------------------------------------------------------

* Note

: None

*""FUNC COMMENT END""**********************************************************/

void sf_chip_erase(void)

{

unsigned char cmd[1];

cmd[0] = SFLASHCMD_CHIP_ERASE;

write_enable();

io_cmd_exe(cmd, 1, NULL, 0);

busy_wait();

}

/*""FUNC COMMENT""**************************************************************

* ID

* Outline

: Sector erase

*------------------------------------------------------------------------------

* Include

*------------------------------------------------------------------------------

* Declaration

: void sf_sector_erase(void);

*------------------------------------------------------------------------------

* Description

: Erases the specified sector in serial flash memory.

: Before erasing or programming, issue the Write Enable command.

: After erasing or programming, make sure to check the status of

: serial flash memory if it is not busy.

*------------------------------------------------------------------------------

* Argument

: int sector_no ; I : Sector number

*------------------------------------------------------------------------------

* Return Value : void

*------------------------------------------------------------------------------

* Note

: None

*""FUNC COMMENT END""**********************************************************/

SH7262 Datasheet(PDF) 25 Page - Renesas Technology Corp

SH7262 Datasheet(HTML) 25 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45

Datasheet Download

Link URL