ST72361 datasheet(67/224 Pages) STMICROELECTRONICS

Part #	ST72361

Description	8-BIT MCU WITH FLASH OR ROM, 10-BIT ADC, 5 TIMERS, SPI, 2x LINSCI

PDF	224 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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67 / 224 page

ST72361

67/224

PWM AUTO-RELOAD TIMER (Cont’d)

Figure 46. input Capture Timing Diagram, fCOUNTER = fCPU / 4

External Interrupt Capability

This mode allows the Input capture capabilities to

be used as external interrupt sources. The inter-

rupts are generated on the edge of the ARTICx

signal.

The edge sensitivity of the external interrupts is

programmable (CSx bit of ARTICCSR register)

and they are independently enabled through CIEx

bits of the ARTICCSR register. After fetching the

interrupt vector, the CFx flags can be read to iden-

tify the interrupt source.

During HALT mode, the external interrupts can be

used to wake up the micro (if the CIEx bit is set). In

this case, the interrupt synchronization is done di-

rectly on the ARTICx pin edge (Figure 47).

Figure 47. ART External Interrupt in Halt Mode

04h

COUNTER

fCOUNTER

xxh

03h

04h

ARTICx PIN

CFx FLAG

ICRx REGISTER

INTERRUPT

fCPU

ICAP SAMPLED

05h

04h

COUNTER

fCOUNTER

xxh

03h

05h

ARTICx PIN

CFx FLAG

ICRx REGISTER

INTERRUPT

fCPU

ICAP SAMPLED

05h

ARTICx PIN

CFx FLAG

INTERRUPT

ST72361 Datasheet(PDF) 67 Page - STMicroelectronics

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