SDA6000 Datasheet, PDF(132/380 Page) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

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SDA6000 Datasheet, PDF (132/380 Pages) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

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SDA 6000

System Control & Configuration

Status of Output Pins during Idle and Power Down Mode

During Idle mode the CPU is stopped, while all peripherals continue their operation in

the same way previously described. Therefore all ports pins, which are configured as

general purpose output pins, output the last data value which was written to their port

output latches. If the alternate output function of a port pin is used by a peripheral, the

state of the pin is determined by the operation of the peripheral.

Port 4 outputs the segment address for the last access on the pins that were selected

during reset, otherwise the output pins of Port 4 represent the port latch data.

During Power Down mode the oscillator and the clocks to the CPU and peripherals are

turned off. Like in idle mode, all port pins, which are configured as general purpose

output pins, output the last data value which was written to their port output latches.

When the alternate output function of a port pin is used by a peripheral the state of this

pin is determined by the last action of the peripheral before the clocks were switched off.

SYSCON1

Reset Value: 0001H

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

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- SLEEPCON

rw

Bit

SLEEPCON

Function

Power Save Mode Selection

00: Idle Mode

01: Sleep Mode

10: reserved

11: Power Down Mode

Note: This register is a protected register; itâs security level is automatically set to full

write protection after execution of the EINIT instruction.

6.5

Dedicated Pins

M2 has different dedicated Pins than other controllers of C16X family. The following

dedicated pins are not available: ALE, READY, EA, NMI. The following table explains

M2 specific dedicated pins.

The external read strobe RD controls the output drivers of external memory or

peripherals when M2 reads data from these external devices. During reset an internal

pull-up ensures an inactive (high) level on the RD output.

Users Manual

6 - 15

2000-06-15

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