ST7PSCR1R4M1 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST7PSCR1R4M1

8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER

STMicroelectronics 

SMARTCARD INTERFACE (Cont’d)

Figure 35. Power Off Timing Diagram

VCARD[1:0] 00

11

00

Software Power-Off

VCARDOK

CRDVCC

Power-On

tON

Power-On

0.4V

tOFF

tON

VCRDP Interrupt

VCARDOK

ST7SCR

11

Voltage Error

tOFF

VCRDP Interrupt

Note: Refer to the Electrical Characteristics sec-

tion for the values of tON and tOFF.

Figure 36. Card clock selection block diagram

OSC

PLL

DIV 4 MHz

ISOCLK

4 MHz

CRDCCR

CLK

SEL

CRD

CLK

POWER OFF

BLOCK

1

0

CRDCLK

61/102

1

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