ST72321_04 datasheet(63/189 Pages) STMICROELECTRONICS

Part #	ST72321

Description	64/44-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC,FIVE TIMERS, SPI, SCI, I2C INTERFACE

Download	189 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

63 / 189 page

ST72321

63/189

PWM AUTO-RELOAD TIMER (Cont’d)

Output compare and Time base interrupt

On overflow, the OVF flag of the ARTCSR register

is set and an overflow interrupt request is generat-

ed if the overflow interrupt enable bit, OIE, in the

ARTCSR register, is set. The OVF flag must be re-

set by the user software. This interrupt can be

used as a time base in the application.

External clock and event detector mode

Using the fEXT external prescaler input clock, the

auto-reload timer can be used as an external clock

event detector. In this mode, the ARTARR register

is used to select the nEVENT number of events to

be counted before setting the OVF flag.

nEVENT = 256 - ARTARR

Caution: The external clock function is not availa-

ble in HALT mode. If HALT mode is used in the ap-

plication, prior to executing the HALT instruction,

the counter must be disabled by clearing the TCE

bit in the ARTCSR register to avoid spurious coun-

ter increments.

Figure 41. External Event Detector Example (3 counts)

COUNTER

t

FDh

FEh

FFh

FDh

OVF

ARTCSR READ

INTERRUPT

ARTARR=FDh

fEXT=fCOUNTER

FEh

FFh

FDh

IF OIE=1

INTERRUPT

IF OIE=1

ARTCSR READ

Similar Part No. - ST72321_04

Manufacturer	Part #	Datasheet	Description
STMicroelectronics	ST723216	2Mb / 185P	8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE August 2003 Rev. 1.9
	ST723217	2Mb / 185P	8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE August 2003 Rev. 1.9
	ST723219	2Mb / 185P	8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE August 2003 Rev. 1.9
	ST72321AR6	2Mb / 185P	8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE August 2003 Rev. 1.9
	ST72321AR6-Auto	2Mb / 243P	PLL for 2x frequency multiplication August 2010 Rev 1

More results

Similar Description - ST72321_04

Manufacturer	Part #	Datasheet	Description
STMicroelectronics	ST72F321	3Mb / 189P	64/44-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE
	ST72321B	3Mb / 187P	64/44-pin 8-bit MCU with 32 to 60K Flash/ROM, ADC, five timers, SPI, SCI, I2C interface
	ST72F521R6TA	3Mb / 215P	80/64-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE
	ST72F521	4Mb / 215P	80/64-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE
	ST72325	1Mb / 193P	8-BIT MCU WITH 16 TO 60K FLASH/ROM, ADC, CSS, FIVE TIMERS, SPI, SCI, I2C INTERFACE
	ST72325	3Mb / 196P	8-bit MCU with 16 to 60K Flash/ROM, ADC, CSS, 5 timers, SPI, SCI, I2C interface
	ST72325XX	3Mb / 197P	8-bit MCU with 16 to 60K Flash/ROM, ADC, CSS, 5 timers, SPI, SCI, I2C interface
	ST72321M6	2Mb / 175P	80-pin 8-bit MCU with 32 to 60 Kbytes Flash, ADC, five timers, SPI, SCI, I2C interface
	ST72321	2Mb / 185P	8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE August 2003 Rev. 1.9
	ST7232A	1Mb / 154P	8-BIT MCU WITH 8K FLASH/ROM, ADC, 4 TIMERS, SPI, SCI INTERFACE

More results

ST72321 Datasheet(PDF) 63 Page - STMicroelectronics

ST72321 Datasheet(HTML) 63 Page - STMicroelectronics

Similar Part No. - ST72321_04

Similar Description - ST72321_04

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL