ST72754J9B1/XXX データシートの表示（PDF） - STMicroelectronics

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ST72754J9B1/XXX

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

STMicroelectronics 

ST72774/ST727754/ST72734

PIN DESCRIPTION (Cont’d)

RESET: Bidirectional. This active low signal forces

the initialization of the MCU. This event is the top

priority non maskable interrupt. This pin is

switched low when the Watchdog has triggered or

VDD is low. It can be used to reset external

peripherals.

OSCIN/OSCOUT: Input/Output Oscillator pin.

These pins connect a parallel-resonant crystal, or

an external source to the on-chip oscillator.

TEST/VPP: Input. EPROM programming voltage.

This pin must be held low during normal operating

modes.

VDD: Power supply voltage (4.0V-5.5V)

VSS: Digital Ground.

Alternate Functions: several pins of the I/O ports

assume software programmable alternate

functions as shown in the pin description

Table 1. ST727x4 Pin Description

Pin No.

Pin Name Type

Description

Remarks

39 1

40 2

41 3

42 4

43 5

44 6

17

28

39

PC0/HSYNCDIV

PC1/AV

PC2/PWM3

PC3/PWM4

PC4/PWM5

PC5/PWM6

PC6/PWM7

PC7/PWM8

PB7/AIN3/PWM2

4 10 PB6/AIN2/PWM1

5 11 PB5/AIN1

6 12 PB4/AIN0

8 13 VDD

9 14 USBVCC

10 15 USBDM

11 16 USBDP

12 17 VSS

13 18 HSYNCI

14 19 VSYNCI

15 20 PD0/VSYNCO

16 21 PD1/HSYNCO

17 22 PD2/CSYNCI

I/O Port C0 or HSYNCDIV output (HSYNCO divided by 2)

I/O Port C1 or “Active Video” input

I/O Port C2 or 10-bit PWM/BRM output 3

I/O Port C3 or 10-bit PWM/BRM output 4

I/O Port C4 or 10-bit PWM/BRM output5

I/O Port C5 or 10-bit PWM/BRM output 6

For analog controls,

after external filtering

I/O Port C6 or 10-bit PWM/BRM output 7

I/O Port C7 or 10-bit PWM/BRM output 8

I/O

Port B7 or ADC analog input 3 or 10-bit PWM/BRM

output 2

I/O

Port B6 or ADC analog input 2 or 10-bit PWM/BRM

output 1

I/O Port B5 or ADC analog input 1

I/O Port B4 or ADC analog input 0

S Supply (4.0V - 5.5V)

S USB power supply (output 3.3V +/- 10%)

I/O USB bidirectional data

I/O USB bidirectional data

Must be tied to ground

for devices without

USB peripheral

S Ground 0V

I SYNC horizontal synchronisation input

I SYNC vertical synchronisation input

TTL levels

Refer to Figure 16

I/O Port D0 or SYNC vertical synchronisation output

I/O Port D1 or SYNC horizontal synchronisation output

I/O Port D2 or SYNC composite synchronisation input

TTL levels with pull-up

(SYNC input)

8/144

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