最近做一个项目，打算用8051（stc89le54ad+）接收gps的经纬度数据，然后存储到sd卡。刚刚调通了sd卡的部分。即将做gps数据在lcd上显示的部分。打算采用计算器上用的那种8字lcd，它至少8个8字，轮流显示经、纬度和时间，不知道有谁是做这块的？
系统打算使用li电池供电，打算使用mos管2sk2053在li电池电压过低时关断，有谁有一些，资源共享？？
我在深圳，不知道去哪里申请样品，如果批量购买，用不了那么多，买来了也不知道怎么办。希望得到各位工程师/ham的帮助，告诉我去哪里找元器件或者指导我完成这个项目！
tthe 2sk2053 is an n-channel vertical mos fet. because it can be driven by a voltage as low as 1.5 v and it is not necessary to consider a drive current, this fet is ideal as an actuator for low-current portable systems such as headphone stereos and video cameras.
features
* new package intermediate between small signal and power types
* gate can be driven by 1.5 v
* low on resistance
rds(on) = 0.40 Ω max. @ vgs = 1.5 v, id = 1.0 a
rds(on) = 0.12 Ω max. @ vgs = 4.0 v, id = 2.5 a
