L9803 datasheet(59/126 Pages) STMICROELECTRONICS

部品番号	L9803

部品情報	Super smart power motor driver with 8-Bit MCU, RAM, EEPROM, ADC, WDG, Timers, PWM and H-bridge driver

PDF	126 Pages

Scroll/Zoom	100%

メーカー	STMICROELECTRONICS [STMicroelectronics]

ホームページ	http://www.st.com

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59 / 126 page

L9803

On-Chip Peripherals

59/126

COUNTER HIGH REGISTER (CHR)

Timer1 Register Address: 0038h

Timer2 Register Address: 0048h

Read Only

Reset Value: 1111 1111 (FFh)

This is an 8-bit register that contains the high part of the counter value.

COUNTER LOW REGISTER (CLR)

Timer1 Register Address: 0039h

Timer2 Register Address: 0049h

Read/Write

Reset Value: 1111 1100 (FCh)

This is an 8-bit register that contains the low part of the counter value. A write to this register

resets the counter. An access to this register after accessing the SR register clears the TOF

bit.16-BIT.

ALTERNATE COUNTER HIGH REGISTER (ACHR)

Timer1 Register Address: 003Ah

Timer2 Register Address: 004Ah

Read Only

Reset Value: 1111 1111 (FFh)

This is an 8-bit register that contains the high part of the counter value.

ALTERNATE COUNTER LOW REGISTER (ACLR)

Timer1 Register Address: 003Bh

Timer2 Register Address: 004Bh

Read/Write

Reset Value: 1111 1100 (FCh)

This is an 8-bit register that contains the low part of the counter value. A write to this register

resets the counter. An access to this register after an access to SR register does not clear

the TOF bit in SR register.

MSB

LSB

MSB

LSB

MSB

LSB

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