T89C51RD2-SLSIM Atmel, T89C51RD2-SLSIM Datasheet - Page 68

IC MICRO CTRL 64K FLASH 44PLCC

T89C51RD2-SLSIM

Manufacturer Part Number
T89C51RD2-SLSIM
Description
IC MICRO CTRL 64K FLASH 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet

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
-
Command Data Stream Protocol
Figure 26. Command Flow
Write/Program Commands
68
T89C51RD2
Sends first character of the
Frame
Sends frame (made of 2 ASCII
characters per Byte)
Echo analysis
Host
All commands are sent using the same flow. Each frame sent by the host is echoed by
the bootloader.
This flow is common to the following frames:
Flash/EEPROM Programming Data Frame
EOF or Atmel Frame (only Programming Atmel Frame)
Config Byte Programming Data Frame
Baud Rate Frame
":"
":"
Gets frame, and sends back ec
for each received Byte
Else
If (not received ":")
Sends echo and start
reception
Bootloader
4243G–8051–05/03

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