ST10F166 datasheet(6/62 Pages) STMICROELECTRONICS

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ST10F166

NMI

Non-Maskable Interrupt Input. A high to low transition at this pin

causes the CPU to vector to the NMI trap routine. When the

PWRDN (power down) instruction is executed, the NMI pin must

be low in order to force the ST10R165 to go into power down

mode. If NMI is high, when PWRDN is executed, the part will con-

tinue to run in normal mode.

If not used, pull NMI high externally.

ALE

Address Latch Enable Output. Can be used for latching the ad-

dress into external memory or an address latch in the multiplexed

bus modes.

External Memory Read Strobe. RD is activated for every external

instruction or data read access.

P1.0 –

P1.15

30 - 37

40 - 47

I/O

Port 1 is a 16-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. Port 1 is used

as the 16-bit address bus (A) in demultiplexed bus modes and

also after switching from a demultiplexed bus mode to a multi-

plexed bus mode..

P5.0 –

P5.9

48 – 53

56 – 59

Port 5 is a 10-bit input-only port with Schmitt-Trigger characteris-

tics. The pins of Port 5 also serve as the (up to 10) analog input

channels for the A/D converter, where P5.x equals ANx (Analog

input channel x) for ST10F166 & ST10F166-16.

P2.0 –

P2.15

62 – 77

...

I/O

Port 2 is a 16-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.

The following Port 2 pins also serve for alternate functions:

P2.0CC0IOCAPCOM: CC0 Cap.-In/Comp.Out

... ...

...

P2.13CC13IOCAPCOM: CC13 Cap.-In/Comp.Out,

BREQExternal Bus Request Output

P2.14CC14IOCAPCOM: CC14 Cap.-In/Comp.Out,

HLDAExternal Bus Hold Acknowl. Output

P2.15CC15IOCAPCOM: CC15 Cap.-In/Comp.Out,

HOLDExternal Bus Hold Request Input

Symbol

Number

Input (I)

Output (O)

Function

Table 1. Pin Definition and Function

ST10F166 数据表(PDF) 6 Page - STMicroelectronics

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