AT89C5131A-L Atmel Corporation, AT89C5131A-L Datasheet - Page 169

• Manufacturer Part Number: AT89C5131A-L
• Manufacturer: Atmel Corporation

Specifications of AT89C5131A-L

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 48 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 1.25
• Eeprom (bytes): 1024
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 3.6
• Timers: 4
• Isp: UART/USB
• Watchdog: Yes

Shift Register Timing Waveform
External Clock Drive
Characteristics (XTAL1)
External Clock Drive
Waveforms
AC Testing Input/Output
Waveforms
Float Waveforms
4338F–USB–08/07
INSTRUCTION
ALE
CLOCK
OUTPUT DATA
WRITE to SBUF
INPUT DATA
CLEAR RI
T
QVXH
0
Table 123. AC Parameters
AC inputs during testing are driven at V
Timing measurement are made at V
INPUT/OUTPUT
T
CHCX
Symbol
T
T
T
T
T
XHDV
T
CHCX
CLCH
CHCL
CLCL
CLCX
0.45V
/T
1
0
CLCX
V
VALID
T
CC
XLXL
-0.5V
Parameter
Oscillator Period
High Time
Low Time
Rise Time
Fall Time
Cyclic ratio in X2 mode
T
XHQX
2
1
VALID
0.2V
T
0.7V
3
V
V
XHDX
2
V
OH
OL
CC
VALID
CC
CC
-0.1
T
+ 0.1 V
- 0.1 V
0.45V
CHCL
-0.5V
4
3
VALID
FLOAT
V
IH
LOAD
min for a logic “1” and V
CC
5
4
VALID
- 0.5 for a logic “1” and 0.45V for a logic “0”.
T
CLCX
6
5
VALID
0.2 V
0.2 V
Min
21
40
5
5
CC
CC
T
V
V
7
CLCL
+ 0.9
- 0.1
LOAD
LOAD
6
VALID
+ 0.1 V
- 0.1 V
T
IL
SET TI
CLCH
SET RI
max for a logic “0”.
T
8
7
CHCX
VALID
Max
60
5
5
Units
ns
ns
ns
ns
ns
%
169