AT89C5130A-M Atmel Corporation, AT89C5130A-M Datasheet - Page 49
AT89C5130A-M
Manufacturer Part Number
AT89C5130A-M
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89C5130A-M.pdf
(188 pages)
2.AT89C5130A-M.pdf
(4 pages)
3.AT89C5130A-M.pdf
(34 pages)
Specifications of AT89C5130A-M
Flash (kbytes)
16 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)
2.7 to 5.5
Timers
4
Isp
UART/USB
Watchdog
Yes
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11.5.2
4337K–USB–04/08
Low Pin Count Hardware Conditions (QFN32)
Figure 11-4. Hardware conditions typical sequence during power-on.
Low pin count products do not have PSEN signal, thus for these products, the bootloader is
always executed after reset thanks to the BLJB bit. The Hardware Condition are detected at the
begining of the bootloader execution from reset.
The default factory Hardware Condition is assigned to port P1.
In order to offer the best flexibility, the user can define its own Hardware Condition on one of the
following Ports:
The Hardware Condition configuration are stored in three bytes called P1_CF, P3_CF, P4_CF.
These bytes can be modified by the user through a set of API or through an ISP command.
Note:
See a detailed description in the applicable Document.
• P1 must be equal to FEh
• Port1
• Port3
• Port4 (only bit0 and bit1)
– Datasheet Bootloader USB AT89C5131.
1. The BLJB must be at 0 (programmed) to be able to restart the bootloader.
2. BLJB can always be changed by the means of API, whether it's a low or high pin count pack-
age.But for a low pin count version, if BLJB=1, no ISP via the Bootloader is further possible
(because the HW conditions are never evaluated, as described in the USB Bootloader
Datasheet). To go back to ISP, BLJB needs to be changed by a parallel programmer(or by the
APIs).
VCC
PSEN
RST
AT89C5130A/31A-M
49
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