20.10 DC characteristics ........................................................................................................... 224
20.11 AC characteristics ........................................................................................................... 225
20.12 Analog comparator characteristics .................................................................................. 226
20.13 Operational amplifier characteristics ............................................................................... 226
20.14 USART characteristics .................................................................................................... 227
20.15 SPI characteristics........................................................................................................... 228
20.16 I2C characteristics ........................................................................................................... 229
20.17 Data retention voltage in STOP mode ............................................................................ 230
20.18 Internal Flash ROM characteristics ................................................................................. 231
20.19 Input/output capacitance ................................................................................................. 231
20.20 Operating voltage range .................................................................................................. 232
20.21 Recommended circuit and layout .................................................................................... 232
20.22 Typical characteristics ..................................................................................................... 233
21 Package information .................................................................................................................. 235
21.1 20 SOP package information .......................................................................................... 235
21.2 16 SOPN package information ........................................................................................ 236
22 Ordering information .................................................................................................................. 237
23 Development tools ..................................................................................................................... 238
23.1 Compiler .......................................................................................................................... 238
23.2 OCD II (On-chip debugger II) emulator and debugger.................................................... 238
23.3 Programmers ................................................................................................................... 239
23.3.1 E-PGM+ .............................................................................................................. 239
23.3.2 OCD II emulator .................................................................................................. 240
23.3.3 Gang programmer .............................................................................................. 240
23.4 Flash programming ......................................................................................................... 241
23.4.1 On-board programming ...................................................................................... 241
23.4.2 Circuit design guide ............................................................................................ 242
23.5 On-chip debug system .................................................................................................... 243
23.5.1 Two-pin external interface .................................................................................. 245
Appendix ............................................................................................................................................. 249
Instruction table .......................................................................................................................... 249
Revision history ................................................................................................................................... 255