AM652X datasheet(237/277 Pages) TI1

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TIMIx

TIMER_01

TIMOx

237

AM6548, AM6528, AM6546

AM6526, AM6527

www.ti.com

SPRSP08I – NOVEMBER 2017 – REVISED DECEMBER 2019

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Product Folder Links: AM6548 AM6528 AM6546 AM6526 AM6527

Specifications

(1) P = functional clock period in ns.

Table 5-117. Switching Characteristics for Timers

NO.

PARAMETER

DESCRIPTION

MODE

MIN

MAX

UNIT

tw(TOUTH)

Pulse duration, high

PWM

-3 + 4P(1)

tw(TOUTL)

Pulse duration, low

PWM

-3 + 4P(1)

(1) P = functional clock period in ns.

Figure 5-121. Timer Timing

For more information, see section Timers in the device TRM.

5.9.5.23 UART

For more details about features and additional description information on the device Universal

Asynchronous Receiver Transmitter, see the corresponding sections within Section 4.3, Signal

Descriptions and Section 6, Detailed Description.

Table 5-118, Table 5-119, and Figure 5-122 present Timing Requirements and Switching Characteristics

for UART interface.

Table 5-118. Timing Requirements for UART

NO.

PARAMETER

DESCRIPTION

MODE

MIN

MAX

UNIT

tw(RX)

Pulse width, receive data bit, 15/30 pF high or low

0.95U (1)

1.05U (1)

tw(CTS)

Pulse width, receive start bit, 15/30 pF high or low

0.95U (1)

1.05U (1)

td(RTS-TX)

Delay time, transmit start bit to transmit data

P (2)

td(CTS-TX)

Delay time, receive start bit to transmit data

P (2)

(1) U = UART baud time = 1/Programmed baud rate

(2) P = Clock period of the reference clock (FCLK, usually 48 MHz or 192 MHz)

Table 5-119. Switching Characteristics Over Recommended Operating Conditions for UART

NO.

PARAMETER

DESCRIPTION

MODE

MIN

MAX

UNIT

f(baud)

Maximum programmable baud rate

15 pF

MHz

30 pF

0.115

tw(TX)

Pulse width, transmit data bit, 15/30 pF high or low

U - 2 (1)

U + 2 (1)

tw(RTS)

Pulse width, transmit start bit, 15/30 pF high or low

U - 2 (1)

U + 2 (1)

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