SAFC165UTAH datasheet(21/539 Pages) INFINEON

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C165UTAH

Pin Descriptions

Data Sheet

2001-02-23

117-121,

124-126

P6.0-

P6.7

I/O

...

Port6 is an 8-bit bidirectional I/O port. It is bit-

wise programmable for input or output via

direction bits. For a pin configured as input, the

output driver is put into high-impedance state.

Port6 outputs can be configured as push/pull

or open-drain drivers.

P6.0

CS0

Chip Select 0 Output

...

P6.4

CS4

Chip Select 4 Output

P6.5

HOLD

External Master Hold

Request Input

P6.6

HLDA

Hold Acknowledge Output

P6.7

BREQ

Bus Request Output

131-134,

137-140

P2.0-

P2.7

I/O

PORT2 is an 8-bit bidirectional I/O port. It is

bit-wise programmable for input or output via

direction bits. For a pin configured as input, the

output driver is put into high-impedance state.

Port2 outputs can be configured as push/pull

or open-drain drivers.

P2.0

EX0IN

Fast External Interrupt 0

Input

P2.7

EX7IN

Fast External Interrupt 7

Input

External Memory Read Strobe. RD is

activated for every external instruction or data

read access.

WR/WRL O

External Memory Write Strobe. In WR mode

this pin is activated for every external data

write access. In WRL mode this pin is

activated for low byte data write accesses on a

16-bit bus, and for every data write access on

an 8-bit bus. See WRCFG in register

SYSCON for mode selection.

ALE

Address Latch Enable Output. Can be used for

latching the address into external memory or

an address latch in the multiplexed bus

modes.

Table 2

Microprocessor Bus and Control Signals

Pin No.

Symbol

Input (I)

Output (O)

Function

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