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18
4173ES–USB–09/07
AT89C5132
6.2.5.2 Parameters
Table 4. PLL Filter Characteristics
V
DD
= 2.7 to 3.3V , T
A
= -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
V
DD
= 3 to 3.3 V, T
A
= -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
V
DD
= 3 to 3.3V , T
A
= -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 Power
R
USB
R
USB
VDD
Supply
R
FS
Symbol Parameter Min Typ Max Unit
R
USB
USB Termination Resistor 27 Ω
R
FS
USB Full Speed Resistor 1.5 KΩ
VSS
ISP
R
ISP
Symbol Parameter Min Typ Max Unit
R
ISP
ISP Pull-Down Resistor 2.2 kΩ