tmp89cm42 TOSHIBA Semiconductor CORPORATION, tmp89cm42 Datasheet - Page 307

• Manufacturer Part Number: tmp89cm42
• Description: 8 Bit Microcontroller Tlcs-870/c1 Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA002
18.6
t
f
Table 18-6 AC Specifications (Circuit Output Timing)
SCL clock frequency
Hold time (re)start condition. This peri-
od is followed by generation of the first
clock pulse.
Low-level period of SCL clock (output)
High-level period of SCL clock (output)
Low-level period of SCL clock (input)
High-level period of SCL clock (input)
Restart condition setup time
Data hold time
Data setup time
Rising time of SDA and SCL signals
Falling time of SDA and SCL signals
Stop condition setup time
Bus free time between the stop condi-
tion and the start condition
Time before rising of SCL after
SBICR2<PIN> is changed from "0" to
"1"
mode, refer to the following table.
The AC specifications are as listed below.
The operating mode (fast or standard) mode should be selected suitable for frequency of fcgck. For these operating
Note:For m and n, refer to"18.4.4.1 Clock source".
AC Specifications
t
t
HD;STA
LOW
Parameter
t
r
t
HD;DAT
Figure 18-23 Definition of Timing (No. 1)
t
Symbol
t
t
t
t
HIGH
t
t
HD;DAT
SU;STO
HD;STA
SU;STA
SU;DAT
SU;SCL
t
t
t
t
t
f
t
HIGH
HIGH
LOW
LOW
SCL
BUF
SU;DAT
t
t
r
f
t
f
Depends on the
Depends on the
m / fcgck
m / fcgck
m / fcgck
software
software
n / fcgck
5 / fcgck
3 / fcgck
n / fcgck
MIN.
250
0
0
-
-
Standard mode
Page 293
fcgck / (m+n)
5 / fcgck
MAX.
1000
t
300
-
-
-
-
-
-
-
-
-
-
SU;STA
t
HD;STA
Depends on the
Depends on the
m / fcgck
m / fcgck
m / fcgck
software
software
n / fcgck
5 / fcgck
3 / fcgck
n / fcgck
MIN.
100
0
0
-
-
Fast mode
fcgck / (m+n)
5 / fcgck
MAX.
300
300
-
-
-
-
-
-
-
-
-
-
t
f
TMP89CM42
t
t
SU;STO
BUF
Unit
kHz
μs
μs
μs
μs
μs
μs
μs
ns
ns
ns
μs
μs
μs