ST7263BK4 STMicroelectronics, ST7263BK4 Datasheet - Page 13

• Manufacturer Part Number: ST7263BK4
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 32K FLASH/ROM, DFU CAPABILITY, 8-BIT ADC, WDG, TIMER, SCI and I2C
• Manufacturer: STMicroelectronics

Specifications of ST7263BK4

• 4, 8, 16 Or 32 Kbytes Program Memory: high density Flash (HDFlash), FastROM or ROM with Read-Out and Write protection

ST7263Bxx
2
2.1
Note:
2.2
2.3
Note:
2.4
Note:
2.5
Note:
1
2
Pin description
RESET signal (bidirectional)
It is active low and forces the initialization of the MCU. This event is the top priority non
maskable interrupt. This pin is switched low when the Watchdog is triggered or the V
low. It can be used to reset external peripherals.
Adding two 100 nF decoupling capacitors on the Reset pin (respectively connected to V
and V
OSCIN/OSCOUT: input/output oscillator pin
These pins connect a parallel-resonant crystal, or an external source, to the on-chip
oscillator.
V
Main power supply and ground voltages
To enhance the reliability of operation, it is recommended that V
together on the application board. This also applies to V
V
Power supply and ground voltages for analog peripherals.
To enhance the reliability of operation, it is recommended that V
together on the application board. This also applies to V
Alternate functions
Several pins of the I/O ports assume software programmable alternate functions as shown
in the pin description.
The USBOE alternate function is mapped on Port C2 in 32/34/48 pin devices. In SO24
devices it is mapped on Port B1.
The timer OCMP1 alternate function is mapped on Port A6 in 32/34/48 pin devices. In SO24
devices it is not available.
DD
DDA
/V
SS
/V
) will significantly improve product electromagnetic susceptibility performance.
SS
SSA
Doc ID 7516 Rev 8
SSA
SSA
and V
and V
DDA
DDA
SS
SS
and V
and V
.
.
DD
DD
Pin description
be connected
be connected
DD
13/186
DD
is