ST72651AR6 STMicroelectronics, ST72651AR6 Datasheet - Page 146

• Manufacturer Part Number: ST72651AR6
• Description: LOW-POWER, FULL-SPEED USB 8-BIT MCU WITH 32K FLASH, 5K RAM, FLASH CARD I/F, TIMER, PWM, ADC, I2C, SPI
• Manufacturer: STMicroelectronics

Specifications of ST72651AR6

• Dual Supply Management: analog voltage detector on the USB power line to enable smart power switching from USB power to battery (on E suffix devices).
• Programmable Internal Voltage Regulator For Memory Cards (2.8v To 3.5v) Supplying: Flash Card I/O lines (voltage shifting)
• 5 Usb Endpoints: 1 control endpoint
• Dtc (data Transfer Coprocessor): Universal Serial/Parallel communications interface, with software plug-ins for current and future protocol standards

ST72651AR6
COMMUNICATION INTERFACE CHARACTERISTICS (Cont’d)
13.11.3 I
1) The device must internally provide a hold time of at least 300 ns for the SDA signal in order to bridge
2) The maximum hold time of the START condition has only to be met if the interface does not stretch the
Cb = total capacitance of one bus line in pF
146/161
Bus free time between a STOP and START con-
dition
Hold time START condition. After this period,
LOW period of the SCL clock
HIGH period of the SCL clock
Set-up time for a repeated START condition
Data hold time
Data set-up time
Rise time of both SDA and SCL signals
Fall time of both SDA and SCL signals
Set-up time for STOP condition
Capacitive load for each bus line
the first clock pulse is generated
the undefined region of the falling edge of SCL
low period of SCL signal
2
C - Inter IC Control Interface
Parameter
Doc ID 7215 Rev 4
I
2
C-Bus Timings
4.7
4.0
4.7
4.0
4.7
0 (1)
250
4.0
Standard I
Min
1000
300
400
Max
2
C
1.3
0.6
1.3
0.6
0.6
0 (1)
100
20+0.1Cb
20+0.1Cb
0.6
Min
Fast I
2
C
0.9(2)
300
300
400
Max
T
TF
T
T
T
T
T
T
T
T
Cb
Symbol
BUF
HD:STA
LOW
HIGH
SU:STA
HD:DAT
SU:DAT
R
SU
:
STO
ms
μs
μs
μs
μs
ns
ns
ns
ns
ns
pF
Unit