Atmel C51 Section 2 Hardware Description

Hardware Description
C51 Microcontrollers Demo Board User Guide 2-4
4119C–8051–3/03
Section 2
Hardware Description
2.1 Block Diagram
Figure 2-1. Block Diagram
2.2 Specifications
2.3 Supported
Microcontrollers Most Atmel C51 and C251 microcontrollers are supported.
The Demo Board does not support low voltage parts, only 5V parts are supported.
Reset & INT1#
Power
interface
RS232
C51/C251 LCD 2*16
Bargraph
Config switches
128 K Flash memory Glue
Synchro connectors
To All Extensions
connector
Parameter Typ Max Unit
Supply DC voltage 9 12 V
Supply DC current 200 mA
Consumption at 12 MHz 60 100 mA
Consumption at 60 MHz in X2 mode 110 150 mA
non-rechargeable battery capacity 550 mAh
Rechargeable battery capacity 150 mAh