ST72264G2 STMicroelectronics, ST72264G2 Datasheet - Page 156

• Manufacturer Part Number: ST72264G2
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72264G2

• 4 K Or 8 Kbytes Program Memory: ROM or single voltage extended Flash (XFlash) with read-out protection, write protection, In-Circuit Programming and In-Application Programming (ICP and IAP). 10K write/erase cycles guaranteed, data retention
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt,Wait and Slow
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input on one timer, PWM and Pulse generator modes

ST72260Gx, ST72262Gx, ST72264Gx
COMMUNICATION INTERFACE CHARACTERISTICS (Cont’d)
The following table gives the values to be written in
the I2CCCR register to obtain the required I
SCL line frequency.
Table 26. SCL Frequency Table
Legend:
R
f
NA = Not achievable
Note:
– For speeds around 200 kHz, achieved speed can have ±5% tolerance
– For other speed ranges, achieved speed can have ±2% tolerance
The above variations depend on the accuracy of the external components used.
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SCL
P
= External pull-up resistance
(kHz)
f
400
300
200
100
= I
SCL
50
20
2
C speed
R
P
=3.3kΩ
5Fh
83h
10h
24h
NA
NA
V
DD
= 3.3 V
R
P
=4.7kΩ
5Fh
84h
10h
24h
NA
NA
f
CPU
=4 MHz.
R
P
=3.3kΩ
83h
10h
24h
5Fh
NA
NA
V
DD
= 5 V
2
C
R
P
=4.7kΩ
5Fh
84h
10h
24h
NA
NA
I2CCCR Value
R
P
=3.3kΩ
8Ah
4Ch
FFh
83h
85h
24h
V
DD
= 3.3 V
R
P
=4.7kΩ
4Ch
85h
89h
23h
FFh
NA
f
CPU
=8 MHz.
R
P
=3.3kΩ
8Ah
4Ch
FFh
83h
85h
24h
V
DD
= 5 V
R
P
=4.7kΩ
4Ch
83h
85h
8Ah
23h
FFh