ST72774 datasheet(29/144 Pages) STMICROELECTRONICS

Part #	ST72774

Description	8-BIT USB MCU FOR MONITORS, WITH UP TO 60K OTP, 1K RAM, ADC, TIMER, SYNC, TMU, PWM/BRM, H/W DDC & I2C

PDF	144 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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29 / 144 page

ST72774/ST727754/ST72734

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Figure 16. Input Structure for SYNC signals

4.1.3 Port A

PA7 and PA[2:0] can be defined as Input lines

(with pull-up) or as Push-pull Outputs.

PA [6:3] can be defined as Input lines (without pull-

up) or as Output Open drain lines.

PA7 and PA[2:0] can be defined as Input lines

(with pull-up) or as Push-pull Outputs.

PA [6:3] can be defined as Input lines (without pull-

up) or as Output Open drain lines.

Table 8. Port A Description

HSYNCI Input

I/O logic (if existing)

TTL trigger

(no pull-up)

CSYNCI Input

I/O logic (if existing)

TTL trigger

pull-up

VDD

VSYNCI Input

HFBACK Input

VFBACK Input

PORT A

I / O

Alternate Function

Input*

Output

Signal

Condition

PA0

With pull-up

push-pull

OCMP1

OC1E =1

(CR2[TIMER])

PA1

With pull-up

push-pull

PA2

With pull-up

push-pull

VSYNCI2

VSYNCSEL=1

(MISCR)

PA3

Without pull-up

open-drain

PA4

Without pull-up

open-drain

PA5

Without pull-up

open-drain

PA6

Without pull-up

open-drain

PA7

With pull-up

push-pull

BLANKOUT

BLKEN = 1

(ENR[SYNC])

*Reset State

ST72774 Datasheet(PDF) 29 Page - STMicroelectronics

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