EMS6500 EM Microelectronic, EMS6500 Datasheet - Page 115

• Manufacturer Part Number: EMS6500
• Description: Microcontroller Development System 4-bit (Emmon), Simulators 4-bit
• Manufacturer: EM Microelectronic

Copyright  2003 EM Microelectronic-Marin SA
11.4. Port A in serial mode
11.5. Supply voltage level detector and ADC mode
The Port A could be defined as a serial port. When in serial mode, the ports have
the following attributions
Table 12-6 Serial port states
Fig. 12-7 SVLD and ADC selection
It is possible to simulate changes in the supply level or the level of bit 4 of PortA
which becomes marked ADC (bit 3 address073H), these changes will be operated
from 0V to 3V with the use of the scroll bar. The minimum precision is 0.01V,
although steps of 0.1V can be obtained using the page-up and page down function
keys. It should be noted that reducing the supply voltage to 0V would not stop the
software simulation of the microcontroller. The symbol
the comparator mode is active (bit 1 address 073H for compare mode) and the
symbol
Port
Out
Clk
S
In
indicates that the ADC or the comparator is inactive.
Function
Serial Data In
Serial Clock
Serial Data Out
Status - Chip select
51
PA0
PA1 Output in master mode
PA3 Output
PA2 Output
Peripheral Interface
Possible states
Input
Input in slave mode
indicates that the ADC or
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Binder 4.3-01/03 Rev. B/495