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AT80C51RD2 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - 80C51 High Performance ROM 8-bit Microcontroller - ATMEL

भाग संख्या AT80C51RD2
समारोह 80C51 High Performance ROM 8-bit Microcontroller
मैन्युफैक्चरर्स ATMEL 
लोगो ATMEL लोगो 
पूर्व दर्शन
1 Page
		
<?=AT80C51RD2?> डेटा पत्रक पीडीएफ

AT80C51RD2 pdf
1. Description
AT80C51RD2 microcontrollers are high performance versions of the 80C51 8-bit
microcontrollers.
The microcontrollers retain all features of the Atmel 80C52 with 256 bytes of internal RAM, a 7-
source 4-level interrupt controller and three timer/counters.
In addition, the microcontrollers have a Programmable Counter Array, an XRAM of 1024 byte, a
Hardware Watchdog Timer, a Keyboard Interface, a more versatile serial channel that facilitates
multiprocessor communication (EUART) and a speed improvement mechanism (X2 mode).
The microcontrollers have 2 software-selectable modes of reduced activity and 8 bit clock pres-
caler for further reduction in power consumption. In Idle mode, the CPU is frozen while the
peripherals and the interrupt system are still operating. In the Power-down mode, the RAM is
saved and all other functions are inoperative.
Table 1. Memory Size
AT80C51RD2
ROM (Bytes)
ROMless
XRAM (Bytes)
1024
TOTAL RAM (Bytes)
1280
I/O
32
2. Block Diagram
XTAL1
XTAL2
ALE/ PROG
PSEN
EA
RD (2)
WR (2)
(2) (2)
EUART
+
BRG
RAM
256x8
CPU
C51
CORE
IB-bus
(1) (1) (1) (1)
XRAM
1Kx8
PCA
Timer2
Timer 0
Timer 1
INT
Ctrl
Parallel I/O Ports & Ext. Bus
Port 0Port 1 Port 2 Port 3
Watch
Dog
Key
Board
(2) (2) (2) (2)
Notes: 1. Alternate function of Port 1
2. Alternate function of Port 3
2 AT80C51RD2
4113D–8051–01/09

विन्यास 30 पेज
डाउनलोड[ AT80C51RD2 Datasheet.PDF ]


शेयर लिंक


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