89C5121-SK1 Atmel, 89C5121-SK1 Datasheet - Page 65

• Manufacturer Part Number: 89C5121-SK1
• Description: KIT SMART CARD FOR AT89C5121
• Manufacturer: Atmel
• Type: Smart Cardr

Specifications of 89C5121-SK1

• Contents: Board
• For Use With/related Products: AT89C5121
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: T89C5121-SK1; T89C5121-SK1

Bootloader Functional
Diagram
Figure 27. Bootloader Flowchart
4164G–SCR–07/06
RD port = Error code =
received on UART
E2PROM at 00
SSB & P3.6 test
UART bypassed
SSB & P3.7 test
E2PROM at 01
Time Elapsed
ext.bypassed?
U Character
Bootloader
bypassed?
Execution
bypassed?
22h
ACK?
ACK?
TWI
?
Versions:
RAM+ROM
RAM,ROM,EEPROM
As described in Section “ROM Configuration Byte”, page 60a ROM bit BLJRB (Boot
Loader Jump ROM Bit) defines which product version is. The Bootloader program is
mapped in ROM space from address C000h up to FFFFh and the entry point is located
at address F800h.
ROM
F800h
External E2PROM (at 01) is detected
Serial communication is detected thanks to
Autobaud feature (Table52)
Internal E2PROM (at 00) is detected
Error: No TWI or serial device detected
A serial code is sent on RD pin (P3.7)
BLJRB = 1
RESET
ROM Bit
RAM+ROM (Pre-prod: Application Program)
ROM
versions:
(Prod)
Atmel FLIP software is available
An ISP Software can be used from
a PC to program the part.
Program is downloaded from
internal EEPROM in CRAM and
executed
Program is downloaded from
External EEPROM into internal
EEPROM and CRAM
and executed.
ROM program
Execution
A/T8xC5121
ROM
0000h
65