AT89C5131A-TIRUL Atmel, AT89C5131A-TIRUL Datasheet - Page 34

• Manufacturer Part Number: AT89C5131A-TIRUL
• Description: MCU 8051 32K FLASH USB 28-SOIC
• Manufacturer: Atmel
• Series: AT89C513xr

Specifications of AT89C5131A-TIRUL

• Core Processor: C52X2
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: LED, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89STK-05
• For Use With: AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-05 - KIT STARTER FOR AT89C5131
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

Reading the Flash Spaces
User
Extra Row
Hardware Security
34
AT89C5131A-L
The following procedure is used to read the User space and is summarized in Figure 20:
•
•
The following procedure is used to read the Extra Row space and is summarized in
Figure 20:
•
•
The following procedure is used to read the Hardware Security space and is summa-
rized in Figure 20:
•
•
Figure 20. Reading Procedure
Map the User space by writing 00h in FCON register.
Read one byte in Accumulator by executing MOVC A, @A+DPTR with A = 0 &
DPTR = 0000h to FFFFh.
Map the Extra Row space by writing 02h in FCON register.
Read one byte in Accumulator by executing MOVC A, @A+DPTR with A = 0 &
DPTR = FF80h to FFFFh.
Map the Hardware Security space by writing 04h in FCON register.
Read the byte in Accumulator by executing MOVC A, @A+DPTR with A = 0 &
DPTR = 0000h.
Exec: MOVC A, @A+DPTR
Flash Spaces Reading
Flash Spaces Mapping
FCON = 00000xx0b
DPTR = Address
Erase Mode
FCON = 00h
Data Read
ACC = 0
4338F–USB–08/07