AT89C5131A-L Atmel Corporation, AT89C5131A-L Datasheet - Page 172

• 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

Flash EEPROM Memory and
Data EEPROM Memory
172
AT89C5131A-L
Table 124. Timing Symbol Definitions
Table 125. Memory AC Timing
VDD = 3.3V ± 10%, T
Figure 82. Flash Memory - ISP Waveforms
Figure 83. Flash Memory - Internal Busy Waveforms
S (Hardware
Condition)
R
B
T
T
T
T
SVRL
RLSX
BHBL
BHBL
Symbol
FBUSY bit
PSEN1
RST
Signals
Parameter
Input PSEN Valid to RST Edge
Input PSEN Hold after RST Edge
Flash EEPROM Internal Busy
(Programming) Time
EEPROM Data Internal Busy
(Programming) Time
Flash EEPROM program memory write
cycles
Configuration bits (fuses bits) memory write
cycles (BLJB, X2, OSCON0, OSCON1)
EEPROM Data memory write cycles
PSEN, EA
RST
FBUSY Flag
A
= -40 to +85°C
T
SVRL
T
BHBL
T
RLSX
L
V
X
Min
50
50
Typ
10
10
Conditions
Low
Valid
No Longer Valid
Max
100K
100K
1K
20
20
4338F–USB–08/07
Cycles
Cycles
Cycles
Unit
ms
ms
ns
ns