ST72621L4M1(2002) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72621L4M1
(Rev.:2002)

LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS, FLASH OR ROM MEMORY, LVD, WDG, 10-BIT ADC, 2 TIMERS, SCI, SPI

STMicroelectronics 

ST7262

Pin n°

Pin Name

Level

Port / Control

Main

Input

Output

Function

(after

Alternate Function

reset)

43 4 - - - - PD3

44 5 - - - - PD2

I/O CT

x

I/O CT

x

x Port D3

x Port D2

Note 1: Peripheral not present on all devices. Refer to “Device Summary” on page 1.

2.1 PCB LAYOUT RECOMMENDATION

In the case of DIP20 devices the user should lay-

out the PCB so that the DIP20 ST7262 device and

the USB connector are centered on the same axis

ensuring that the D- and D+ lines are of equal

length. Refer to Figure 6

Figure 6. Recommended PCB Layout for USB Interface with DIP20 package

1

2

3

4

5

6

7

8

9

USBDM 10

20

19

18

17

16

15

14

13

12

USBVCC

11

USBDP

Ground

USB Connector

1.5KOhm pull-up resistor

Ground

10/133

Share Link: