Revision history .............................................................................................................................................................. 2
1 Overview ................................................................................................................................................................... 3
1.1. Description .......................................................................................................................................................... 3
1.2 Features .............................................................................................................................................................. 4
1.3 Development tools .............................................................................................................................................. 5
1.3.1 Compiler ...................................................................................................................................................... 5
1.3.2 OCD(On-chip debugger) emulator and debugger ....................................................................................... 5
1.3.3 Programmer ................................................................................................................................................. 6
1.4 MTP programming .............................................................................................................................................. 8
1.4.1 Overview ...................................................................................................................................................... 8
1.4.2 On-Board programming ............................................................................................................................... 8
1.4.3 Circuit Design Guide.................................................................................................................................... 9
2 Block diagram ........................................................................................................................................................ 10
3 Pin assignment ...................................................................................................................................................... 11
4 Package Diagram ................................................................................................................................................... 13
5 Pin Description ....................................................................................................................................................... 18
6 Port Structures ....................................................................................................................................................... 20
6.1 General Purpose I/O Port ................................................................................................................................. 20
6.2 External Interrupt I/O Port ................................................................................................................................. 21
7 Electrical Characteristics ...................................................................................................................................... 22
7.1 Absolute Maximum Ratings .............................................................................................................................. 22
7.2 Recommended Operating Conditions .............................................................................................................. 22
7.3 A/D Converter Characteristics .......................................................................................................................... 23
7.4 Power-On Reset Characteristics ...................................................................................................................... 23
7.5 Low Voltage Reset and Low Voltage Indicator Characteristics ........................................................................ 24
7.6 High Frequency Internal RC Oscillator Characteristics .................................................................................... 25
7.7 Low Frequency Internal RC Oscillator Characteristics ..................................................................................... 25
7.8 Internal Watch-Dog Timer RC Oscillator Characteristics.................................................................................. 25
7.9 DC Characteristics ............................................................................................................................................ 26
7.10 AC Characteristics ............................................................................................................................................ 27
7.11 SPI Characteristics ........................................................................................................................................... 28
7.12 UART Characteristics ....................................................................................................................................... 29
7.13 I2C Characteristics ........................................................................................................................................... 30
7.14 Data Retention Voltage in Stop Mode .............................................................................................................. 31
7.15 Internal Flash Rom Characteristics .................................................................................................................. 32
7.16 Input/Output Capacitance ................................................................................................................................. 32
7.17 Main Clock Oscillator Characteristics ............................................................................................................... 33
7.18 Sub Clock Oscillator Characteristics ................................................................................................................ 34
7.19 Main Oscillation Stabilization Characteristics ................................................................................................... 35
7.20 Sub Oscillation Characteristics ......................................................................................................................... 35
7.21 Operating Voltage Range ................................................................................................................................. 36
7.22 Recommended Circuit and Layout ................................................................................................................... 37
7.23 Recommended Circuit and Layout with SMPS Power ..................................................................................... 38
7.24 Typical Characteristics ...................................................................................................................................... 39
8 Memory ................................................................................................................................................................... 43
8.1 Program Memory .............................................................................................................................................. 43
8.2 Data Memory .................................................................................................................................................... 45
8.3 Extended SFR Area .......................................................................................................................................... 47
8.4 SFR Map ........................................................................................................................................................... 48
8.4.1 SFR Map Summary ................................................................................................................................... 48
8.4.2 Extended SFR Map Summary ................................................................................................................... 49
8.4.3 SFR Map ................................................................................................................................................... 50