ST72321R6-Auto STMicroelectronics, ST72321R6-Auto Datasheet - Page 170

• Manufacturer Part Number: ST72321R6-Auto
• Description: 8-bit MCU for automotive with 32 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321R6-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt, Wait and Slow

I2C bus interface (I2C)
16.7.7
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Table 88.
I
Table 89.
OAR2
2
Bit
7:1 ADD[7:1]
7:0 ADD[7:0]
Bit
7:6
5:3
2:1
0
C own address register (OAR2)
0
7
ADD[9:8]
FR[1:0]
Name
ADD0
Name
FR[1:0]
RW
-
-
OAR1 register description
OAR2 register description
Interface address
Address direction bit
6
Frequency bits
Reserved
Interface address
Reserved
These bits define the I
of the interface. They are not cleared
when the interface is disabled
(PE = 0).
This bit is ‘don’t care’, the interface
acknowledges either 0 or 1. It is not
cleared when the interface is disabled
(PE = 0).
Address 01h is always ignored.
These bits are set by software only when the interface is disabled (PE = 0). To
configure the interface to I
the CPU frequency f
00: f
01: f
These are the most significant bits of the I
mode only). They are not cleared when the interface is disabled (PE = 0).
7-bit addressing mode
CPU
CPU
Not applicable
5
< 6 MHz
= 6 to 8 MHz
Doc ID 13829 Rev 1
Reserved
CPU
2
C bus address
4
-
.
2
C specified delays, select the value corresponding to
Function
Function
3
Interface address
These are the least significant bits of
the I
They are not cleared when the
interface is disabled (PE = 0).
2
C bus address of the interface (10-bit
2
C bus address of the interface.
10-bit addressing mode
2
Reset value: 0100 0000 (40h)
ADD[9:8]
Not applicable
RW
1
ST72321xx-Auto
Reserved
0
-