C166 Просмотр технического описания (PDF) - Infineon Technologies

Номер в каталоге

Компоненты Описание

Список матч

C166

16-Bit Single-Chip Microcontroller

Infineon Technologies 

&3,

Table 1

Pin Definitions and Functions (continued)

Symbol Pin Pin Input Function

Num. Num. Outp.

TQFP MQFP

EA

35 37 I

External Access Enable pin. A low level at this pin

during and after Reset forces the C161PI to begin

instruction execution out of external memory. A high

level forces execution out of the internal program

memory.

"ROMless" versions must have this pin tied to ‘0’.

PORT0

IO PORT0 consists of the two 8-bit bidirectional I/O ports

P0L.0-7 38- 40-

P0L and P0H. It is bit-wise programmable for input or

45 47

output via direction bits. For a pin configured as input,

P0H.0-7 48- 50-

the output driver is put into high-impedance state.

55 57

In case of external bus configurations, PORT0 serves

as the address (A) and address/data (AD) bus in

multiplexed bus modes and as the data (D) bus in

demultiplexed bus modes.

Demultiplexed bus modes:

Data Path Width: 8-bit

16-bit

P0L.0 – P0L.7:

D0 – D7

D0 - D7

P0H.0 – P0H.7: I/O

D8 - D15

Multiplexed bus modes:

Data Path Width: 8-bit

16-bit

P0L.0 – P0L.7:

AD0 – AD7 AD0 - AD7

P0H.0 – P0H.7: A8 - A15 AD8 - AD15

PORT1

IO PORT1 consists of the two 8-bit bidirectional I/O ports

P1L.0-7 56- 58-

P1L and P1H. It is bit-wise programmable for input or

63 65

output via direction bits. For a pin configured as input,

P1H.0-7 66- 68-

the output driver is put into high-impedance state.

73 75

PORT1 is used as the 16-bit address bus (A) in

demultiplexed bus modes and also after switching from

a demultiplexed bus mode to a multiplexed bus mode.

Data Sheet

9

1999-07

Share Link: