18
4173ES–USB–09/07
AT89C5132
6.2.5.2 Parameters Table 4. PLL Filter Characteristics
VDD = 2.7 to 3.3V , TA = -40 to +85°C
6.2.6 USB Connection
6.2.6.1 Schematic
Figure 6-6. USB Connection
6.2.6.2 Parameters Table 16. USB Characteristics
VDD = 3 to 3.3 V, TA = -40 to +85°C
6.2.7 In-system Programming
6.2.7.1 Schematic
Figure 6-7. ISP Pull-down Connection
6.2.7.2 Parameters Table 5. ISP Pull-Down Characteristics
VDD = 3 to 3.3V , TA = -40 to +85°C
Symbol Parameter Min Typ Max Unit
R Filter Resistor 100 Ω
C1 Filter Capacitance 1 10 nF
C2 Filter Capacitance 2 2.2 nF
D+
D-
VBUS
GND
D+
D-
VSS
To Pow er
RUSB
RUSB
VDD
Supply RFS
Symbol Parameter Min Typ Max Unit
RUSB USB Termination Resistor 27 Ω
RFS USB Full Speed Resistor 1.5 KΩ
VSS
ISP
RISP
Symbol Parameter Min Typ Max Unit
RISP ISP Pull-Down Resistor 2.2 kΩ