ST72651AR6 STMicroelectronics, ST72651AR6 Datasheet - Page 47

• 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

I/O PORTS (Cont’d)
Figure 31. I/O Port General Block Diagram
Table 12. I/O Port Mode Options
Legend: NI - not implemented
Note: The diode to V
the pad and V
Input
Output
REGISTER
ACCESS
SOURCE (ei
EXTERNAL
INTERRUPT
DDR SEL
Off - implemented not activated
On - implemented and activated
OR SEL
DR SEL
Floating with/without Interrupt
Pull-up with/without Interrupt
Push-pull
Open Drain (logic level)
True Open Drain
Configuration Mode
DDR
DR
OR
x
SS
)
is implemented to protect the device against positive stress.
POLARITY
SELECTION
DD
ALTERNATE
OUTPUT
ALTERNATE
ENABLE
If implemented
/V
DDF
is not implemented in the true open drain pads. A local protection between
FROM
OTHER
BITS
1
0
Doc ID 7215 Rev 4
Pull-Up
Off
On
Off
NI
N-BUFFER
PULL-UP
CONFIGURATION
P-Buffer
Off
On
Off
NI
SCHMITT
TRIGGER
CMOS
V
DD
/V
DDF
NI (see note)
to V
On
V
P-BUFFER
(see table below)
DD
DD
/V
DIODES
(see table below)
Diodes
PULL-UP
(see table below)
DDF
ST72651AR6
ALTERNATE
ANALOG
INPUT
INPUT
to V
PAD
On
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SS
1