ST7263BH2 STMicroelectronics, ST7263BH2 Datasheet - Page 103

• Manufacturer Part Number: ST7263BH2
• 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 ST7263BH2

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

ST7263Bxx
Control register (CTLR)
Reset value: 0000 0110 (06h)
Device Address register (DADDR)
Reset value: 0000 0000 (00h)
7
0
7
0
[6:0] ADD[6:0] Device address, 7 bits.
[7:4] Reserved. Forced by hardware to 0.
0
ADD6
7 Reserved. Forced by hardware to 0.
3 RESUME Resume.
2 PDWN Power down.
1 FSUSP Force suspend mode.
0 FRES Force reset.
Software must write into this register the address sent by the host during
enumeration.
Note: This register is also reset when a USB reset is received from the USB bus or
This bit is set by software to wakeup the Host when the ST7 is in suspend mode.
0: Resume signal not forced
1: Resume signal forced on the USB bus.
Software should clear this bit after the appropriate delay.
This bit is set by software to turn off the 3.3 V on-chip voltage regulator that
supplies the external pull-up resistor and the transceiver.
0: Voltage regulator on
1: Voltage regulator off
Note: After turning on the voltage regulator, software should allow at least 3 µs for
This bit is set by software to enter Suspend mode. The ST7 should also be halted
allowing at least 600 ns before issuing the HALT instruction.
0: Suspend mode inactive
1: Suspend mode active
When the hardware detects USB activity, it resets this bit (it can also be reset by
software).
This bit is set by software to force a reset of the USB interface, just as if a RESET
sequence came from the USB.
0: Reset not forced
1: USB interface reset forced.
The USB is held in RESET state until software clears this bit, at which point a “USB-
RESET” interrupt will be generated if enabled.
0
forced through bit FRES in the CTLR register.
stabilization of the power supply before using the USB interface.
ADD5
0
Doc ID 7516 Rev 8
ADD4
RESUME
Read/write
Read.write
ADD3
PDWN
ADD2
FSUSP
On-chip peripherals
ADD1
FRES
ADD0
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0
0