T89C51RD2-SLSIM Atmel, T89C51RD2-SLSIM Datasheet - Page 75
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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Flash Parallel
Programming
Signature Bytes
Set-up modes Configuration
Definition of Terms
4243G–8051–05/03
Four hardware read only registers have to be accessed with parallel static test modes
(mode TMS) in order to control the Flash parallel programmimg:
•
•
•
•
As these registers can only be accessed by hardware, they must be read by the parallel
programmers and then copied in the XAF in order to make their values accessible by
software (ISP or API).
In order to program and verify the Flash or to read the signature bytes, the T89C51RD2
is placed in specific set-up modes. (See Figure 31.)
Figure 31. Set-Up Modes Configuration
Address Lines:P1.0-P1.7, P2.0-P2.5, P3.4-P3.5, respectively for A0-A15.
Data Lines:P0.0-P0.7 for D0-D7
Control Signals:RST, PSEN, P2.6, P2.7, P3.2, P3.3, P3.6, P3.7.
Program Signals: ALE/PROG, EA
Manufacturer code
Device ID # 1: Family code
Device ID # 2: Memories size and type
Device ID # 3: Name and revision
PROGRAM
SIGNALS*
CONTROL
SIGNALS*
4 to 6 MHz
EA
ALE/PROG
RST
PSEN
P2.6
P2.7
P3.3
P3.6
P3.7
XTAL1
V
P0.0-P0.7
P1.0-P1.7
CC
P3.5
P2.0-P2.5
P3.4
VSS
GND
+5V
D0-D7
A0-A7
A8-A13
A14
A15
T89C51RD2
75
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