ST7263BK1 STMicroelectronics, ST7263BK1 Datasheet - Page 122

• Manufacturer Part Number: ST7263BK1
• 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 ST7263BK1

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

On-chip peripherals
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I²C Clock Control register (CCR)
Reset value: 0000 0000 (00h)
FM/SM
7
[6:0] CC[6:0] 7-bit clock divider.
2 ARLO Arbitration lost.
1 BERR Bus error.
0 GCAL General Call (Slave mode).
7 FM/SM Fast/Standard I²C mode.
CC6
This bit is set and cleared by software. It is not cleared when the interface is
disabled (PE=0).
0: Standard I²C mode
1: Fast I²C mode
These bits select the speed of the bus (F
not cleared when the interface is disabled (PE=0).
Refer to the Electrical Characteristics section for the table of value.
Note: The programmed F
This bit is set by hardware when the interface loses the arbitration of the bus to
another master. An interrupt is generated if ITE=1. It is cleared by software reading
SR2 register or by hardware when the interface is disabled (PE=0).
After an ARLO event the interface switches back automatically to Slave mode
(M/SL=0).
The SCL line is not held low while ARLO=1.
0: No arbitration lost detected
1: Arbitration lost detected
Note: In a Multimaster environment, when the interface is configured in Master
This bit is set by hardware when the interface detects a misplaced Start or Stop
condition. An interrupt is generated if ITE=1. It is cleared by software reading SR2
register or by hardware when the interface is disabled (PE=0).
The SCL line is not held low while BERR=1.
0: No misplaced Start or Stop condition
1: Misplaced Start or Stop condition
Note: If a Bus Error occurs, a Stop or a repeated Start condition should be
This bit is set by hardware when a general call address is detected on the bus while
ENGC=1. It is cleared by hardware detecting a Stop condition (STOPF=1) or when
the interface is disabled (PE=0).
0: No general call address detected on bus
1: general call address detected on bus
Receive mode it does not perform arbitration during the reception of the
Acknowledge Bit. Mishandling of the ARLO bit from the I2CSR2 register
may occur when a second master simultaneously requests the same data
from the same slave and the I
The ARLO bit is then left at 0 instead of being set.
generated by the Master to re-synchronize communication, get the
transmission acknowledged and the bus released for further communication
CC5
Doc ID 7516 Rev 8
CC4
SCL
Read/write
assumes no load on SCL and SDA lines.
CC3
2
C master does not acknowledge the data.
SCL
) depending on the I²C mode. They are
CC2
CC1
ST7263Bxx
CC0
0