AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 33

• Manufacturer Part Number: AT89C5132
• Manufacturer: Atmel Corporation

Specifications of AT89C5132

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-12C
• Max I/o Pins: 44
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Uart: 1
• Adc Channels: 2
• Adc Resolution (bits): 10
• Adc Speed (ksps): 22.7
• Sram (kbytes): 2.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 2
• Isp: UART/USB
• Watchdog: Yes

6.3.9.2
6.3.9.3
Figure 6-24. AC Testing Input/Output Waveforms
Notes:
Figure 6-25. Float Waveforms
Note:
4173ES–USB–09/07
1. During AC testing, all inputs are driven at
2. Timing measurements are made on all outputs at V
For timing purposes, a port pin is no longer floating when a 100 mV change from load voltage occurs and begins to float when a
100 mV change from the loading V
Timings
Waveforms
V
DD
0.45 V
Table 22. External Clock AC Timings
V
Figure 6-23. External Clock Waveform
Symbol
V
- 0.5
DD
LOAD
= 2.7 to 3.3V, T
0.45 V
T
T
T
T
T
T
CHCX
CLCL
CLCX
CLCH
CHCL
V
CR
V
V
LOAD
LOAD
DD
INPUTS
OH
+ 0.1V
- 0.5
- 0.1V
/V
0.7
0.3
V
OL
IL
V
Parameter
Clock Period
High Time
Low Time
Rise Time
Fall Time
Cyclic Ratio in X2 Mode
V
V
level occurs with I
A
IH1
= -40 to +85°C
DD
DD
V
DD
-0.5V for a logic 1 and 0.45V for a logic 0.
Timing Reference Points
T
IH
CHCL
min for a logic 1 and V
OL
/I
OH
= ±20 mA.
T
CLCX
V
V
IL
IH
T
IL
max
CLCH
min
max for a logic 0.
OUTPUTS
V
V
OH
OL
+ 0.1V
- 0.1V
T
CLCL
Min
50
10
10
40
3
3
T
CHCX
AT89C5132
Max
60
Unit
ns
ns
ns
ns
ns
%
33