EMS6500 EM Microelectronic, EMS6500 Datasheet - Page 74

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

Copyright  2003 EM Microelectronic-Marin SA
3.3.
3.4.
3.5.
Port C can be configured as either a 4 bit input port or a 4 bit output port (bit 1
address 07AH). The possible combinations for the LED states are the same as for
port B and button states are the same as for port A and are shown in Table 3-1.
Shows the selected output state of the buzzer (corresponds to bits 0-1 register
07EH). The possible values are shown in Table 3-4.
Parameter Signification
IRQ
Input
Value
Port C
Prescaler
Buzzer
The symbol
to the frequency indicated. The symbol
will be generated even though the IRQ flag will be set .
(Corresponds to bit3 in register 07DH).
This field indicates the bas frequency that will be used for the
prescaler events (bits 0-1 register 074H).
Signification
2048 Hz output
Continuous high
Continuous low
Table 3-4 Possible buzzer output values
Table 3-3 Prescaler parameters
signifies that an IRQ will be generated according
10
Peripheral Interface
signifies that no IRQ
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EM66xx
Binder 4.3-01/03 Rev. B/495