User`s manual

21
MCU
Vcc
User system
interface cable
Vss
EXTAL
XTAL
Vcc
Vss
EXTAL
XTAL
V
CL
EMLE
NC
NC
NC
NC
VHC244 EPM7256
Voltage-follower
circuit
Vcc
47 kΩ
LPT244
23 kΩ
VHC244
Vcc
47 kΩ
Figure 3.2 User System Interface Circuits (2)