Dear ：
customer need solution instead of STM32F103CBT6
1. Frequency : more than 36Mhz；
2.Flash :more than 128KB；
3.RAM:more than 20KB
4.timer more than 4
5.uart :more than 2
6.I2C more than 1
7.IO :more than 36
8.package LQFP48 or LQFP64
9.lead timer 40weeks
10. compatible with IAR or Keil development environment
