16.2 Register map ..................................................................................................................... 163
16.3 Register description .......................................................................................................... 164
16.1 Polynomial ......................................................................................................................... 166
17 Power down operation ............................................................................................................... 167
17.1 Peripheral operation in IDLE/ STOP mode ....................................................................... 167
17.2 IDLE mode ........................................................................................................................ 168
17.3 STOP mode ...................................................................................................................... 169
17.4 Released operation of STOP mode .................................................................................. 170
17.5 Register map ..................................................................................................................... 171
17.6 Register description .......................................................................................................... 171
18 Reset .......................................................................................................................................... 172
18.1 Reset block diagram ......................................................................................................... 172
18.2 Power on reset .................................................................................................................. 173
18.3 External resetb input ......................................................................................................... 176
18.4 Low voltage reset process ................................................................................................ 177
18.5 LVI block diagram ............................................................................................................. 178
18.6 Register Map ..................................................................................................................... 179
18.7 Reset operation register description ................................................................................. 179
19 Memory programming ................................................................................................................ 182
19.1 Flash control and status registers ..................................................................................... 182
19.1.1 Register map ........................................................................................................ 182
19.1.2 Register description .............................................................................................. 183
19.2 Memory map ..................................................................................................................... 189
19.2.1 Flash memory map ............................................................................................... 189
19.3 Serial in-system program mode ........................................................................................ 190
19.3.1 Flash operation ..................................................................................................... 190
19.4 Mode entrance method of ISP mode ................................................................................ 195
19.4.1 Mode entrance method for ISP ............................................................................ 195
19.5 Security ............................................................................................................................. 196
19.6 Configure option ................................................................................................................ 197
19.7 Password function ............................................................................................................. 199
20 Electrical characteristics............................................................................................................. 201
20.1 Absolute maximum ratings ................................................................................................ 201
20.2 Recommended operating conditions ................................................................................ 201
20.3 A/D converter characteristics ............................................................................................ 202
20.4 VDC1.55 Reference Voltage Characteristics .................................................................... 203
20.5 Power on reset characteristics .......................................................................................... 203
20.6 Low voltage reset and low voltage indicator characteristics ............................................. 204
20.7 High speed internal RC oscillator characteristics ............................................................. 205
20.8 Low speed internal RC oscillator characteristics .............................................................. 205
20.9 DC characteristics ............................................................................................................. 206
20.10 AC characteristics ............................................................................................................. 207
20.11 USART characteristics ...................................................................................................... 208
20.12 SPI characteristics ............................................................................................................ 211
20.13 I2C characteristics............................................................................................................. 212
20.14 Data retention voltage in stop mode ................................................................................. 213
20.15 Internal flash ROM characteristics .................................................................................... 214
20.16 Input/output capacitance ................................................................................................... 214
20.17 Main clock oscillator characteristics .................................................................................. 215
20.18 Sub-clock oscillator characteristics ................................................................................... 216
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