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PDF TSC80251G2D Fiche technique - Atmel

Numéro de référence TSC80251G2D
Description 8/16-bit Microcontroller
Fabricant Atmel 
Logo Atmel Logo 

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TSC80251G2D Datasheet, Description
Features
Pin and Software Compatibility with Standard 80C51 Products and 80C51Fx/Rx/Rx+
Plug-In Replacement of Intel’s 8xC251Sx
C251 Core: Intel’s MCS®251 D-step Compliance
40-byte Register File
Registers Accessible as Bytes, Words or Dwords
Three-stage Instruction Pipeline
16-bit Internal Code Fetch
Enriched C51 Instruction Set
16-bit and 32-bit ALU
Compare and Conditional Jump Instructions
Expanded Set of Move Instructions
Linear Addressing
1 Kbyte of On-Chip RAM
External Memory Space (Code/Data) Programmable from 64 kilobytes to 256 kilobytes
TSC87251G2D: 32 kilobytes of On-Chip EPROM/OTPROM
– SINGLE PULSE Programming Algorithm
TSC83251G2D: 32 kilobytes of On-Chip Masked ROM
TSC80251G2D: ROMless Version
Four 8-bit Parallel I/O Ports (Ports 0, 1, 2 and 3 of the Standard 80C51)
Serial I/O Port: Full Duplex UART (80C51 Compatible) With Independent Baud Rate
Generator
SSLC: Synchronous Serial Link Controller
TWI Multi-master Protocol
μWire and SPI Master and Slave Protocols
Three 16-bit Timers/Counters (Timers 0, 1 and 2 of the Standard 80C51)
EWC: Event and Waveform Controller
Compatible with Intel’s Programmable Counter Array (PCA)
Common 16-bit Timer/Counter Reference with Four Possible Clock Sources (Fosc/4,
Fosc/12, Timer 1 and External Input)
Five Modules, Each with Four Programmable Modes:
– 16-bit Software Timer/Counter
– 16-bit Timer/Counter Capture Input and Software Pulse Measurement
– High-speed Output and 16-bit Software Pulse Width Modulation (PWM)
– 8-bit Hardware PWM Without Overhead
16-bit Watchdog Timer/Counter Capability
Secure 14-bit Hardware Watchdog Timer
Power Management
Power-On Reset (Integrated on the Chip)
Power-Off Flag (Cold and Warm Resets)
Software Programmable System Clock
Idle Mode
Power-down Mode
Keyboard Interrupt Interface on Port 1
Non Maskable Interrupt Input (NMI)
Real-Time Wait States Inputs (WAIT#/AWAIT#)
ONCE Mode and Full Speed Real-time In-circuit Emulation Support (Third Party
Vendors)
High Speed Versions:
– 4.5V to 5.5V
– 16 MHz and 24 MHz
Typical Operating Current: 35 mA at 24 MHz
24 mA at 16 MHz
Typical Power-down Current: 2 μA
Low Voltage Version:
– 2.7V to 5.5V
– 16 MHz
8/16-bit
Microcontroller
with Serial
Communication
Interfaces
TSC80251G2D
TSC83251G2D
TSC87251G2D
AT80251G2D
AT83251G2D
AT87251G2D
Rev. 4135F–8051–11/06
1
Free Datasheet http://www.datasheet4u.net/
TSC80251G2D Fiche technique
Block Diagram
P3(A16) P2(A15-8) P1(A17) P0(AD7-0)
PSEN#
PORTS 0-3
ALE/PROG#
ROM
EPROM
OTPROM
32 KB
RAM
1 Kbyte
EA#/VPP
16-bit Memory Code
16-bit Memory Address
AWAIT#
Bus Interface Unit
CPU
VDD
VSS
VSS1
VSS2
AT/TSC8x251G2D
Timers 0, 1 and 2
UART
Baud Rate Generator
Event and Waveform
Controller
TWI/SPI/mWire
Controller
Watchdog Timer
Power Management
RST
XTAL2
Clock Unit
Clock System Prescaler XTAL1
Keyboard Interface
Interrupt Handler
Unit
NMI
4135F–8051–11/06
3
Free Datasheet http://www.datasheet4u.net/

3 Page

TSC80251G2D pdf
Table 1. TSC80251G2D Pin Assignment
DIP PLCC VQFP Name
1 39 VSS1
1 2 40 P1.0/T2
2 3 41 P1.1/T2EX
3 4 42 P1.2/ECI
4 5 43 P1.3/CEX0
5 6 44 P1.4/CEX1/SS#
6 7 1 P1.5/CEX2/MISO
7 8 2 P1.6/CEX3/SCL/SCK/WAIT#
8 9 3 P1.7/A17/CEX4/SDA/MOSI/WCLK
9 10 4 RST
10 11
5 P3.0/RXD
12 6 AWAIT#
11 13
7 P3.1/TXD
12 14
8 P3.2/INT0#
13 15
9 P3.3/INT1#
14 16 10 P3.4/T0
15 17 11 P3.5/T1
16 18 12 P3.6/WR#
17 19 13 P3.7/A16/RD#
18 20 14 XTAL2
19 21 15 XTAL1
20 22 16 VSS
DIP PLCC VQFP Name
23 17 VSS2
21 24 18 P2.0/A8
22 25 19 P2.1/A9
23 26 20 P2.2/A10
24 27 21 P2.3/A11
25 28 22 P2.4/A12
26 29 23 P2.5/A13
27 30 24 P2.6/A14
28 31 25 P2.7/A15
29 32 26 PSEN#
30 33 27 ALE/PROG#
34 28 NMI
31 35 29 EA#/VPP
32 36 30 P0.7/AD7
33 37 31 P0.6/AD6
34 38 32 P0.5/AD5
35 39 33 P0.4/AD4
36 40 34 P0.3/AD3
37 41 35 P0.2/AD2
38 42 36 P0.1/AD1
39 43 37 P0.0/AD0
40 44 38 VDD
6 AT/TSC8x251G2D
4135F–8051–11/06
Free Datasheet http://www.datasheet4u.net/

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