T89C51RD2-SLSIM Atmel, T89C51RD2-SLSIM Datasheet - Page 72
T89C51RD2-SLSIM
Manufacturer Part Number
T89C51RD2-SLSIM
Description
IC MICRO CTRL 64K FLASH 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.T89C51RD2-SMSIM.pdf
(104 pages)
Specifications of T89C51RD2-SLSIM
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
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Example
Read Function
Description
Figure 30. Read Flow
Example
72
T89C51RD2
COMMAND FINISHED
Wait Value of Data
Send Read Command
OR
Host
OR
COMMAND ABORTED
COMMAND ABORTED
Wait Checksum Error
Wait Security Error
This flow is similar for the following frames:
•
•
Read function (read SBV)
Atmel Read function (read Bootloader version)
Display data from address 0000h to 0020h
HOST
BOOTLOADER
HOST
BOOTLOADER
BOOTLOADER
BOOTLOADER
BOOTLOADER
HOST
BOOTLOADER
Reading Frame
EOF Frame/Atmel Frame (only reading Atmel Frame)
’value’ & ’.’ & CR & LF
’X’ & twice (CR & LF)
Read Command
’L’ & CR & LF
: 02 0000 05 07 02 F0
: 02 0000 05 07 02 F0 Value . CR LF
: 02 0000 01 02 00 FB
: 02 0000 01 02 00 FB Value . CR LF
0000=-----data------ CR LF
0010=-----data------ CR LF
0020=data CR LF
: 05 0000 04 0000 0020 00 D7
: 05 0000 04 0000 0020 00 D7
Send Checksum error
Send Security error
Bootloader
Wait Read Command
(16 data)
(16 data)
( 1 data)
RD_WR_SECURITY
Send Data Read
Checksum error
Read Value
4243G–8051–05/03
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