
ML62Q1000 Series User's Manual
Chapter 12
I2C Bus Unit
FEUL62Q1000
12-3
12.1.3 List of Pins
The I/O pins of the I
2
C bus unit are assigned to the shared function of the general ports.
For details about the pin assignment and the shared function of genral ports, see Chapter 17 "GPIO."
Pin name
I/O
Description
I2CU0_SDA
I/O
I
2
C bus unit 0 data I/O pin
I2CU0_SCL
I/O
I
2
C bus unit 0 clock I/O pin
12.1.4 Pin Setting
I2CU0_SDA pin and I2CU0_SCL pin are assigned to multiple general ports.
Be sure to use the ports in following combinations.
Pin name
Combination 1
Combination 2
Combination 3
Combination 4
*1
Combination 5
*1
I2CU0_SDA
P03
P15
P26
P03
P46
I2CU0_SCL
P04
P16
P27
P02
P47
*1
: Available on the ML62Q1700 group only
In addtion to the mode setting of the shared function, choose "Enable Input, Enable Output, Nch open drain output and
without pull-up" by setting following data to the port n mode register m (PnMODm).
Table 12-3
I
2
C bus unit general port combinations
Po
rt
n
a
m
e
PnMODm
C
om
bi
nat
ion
S
et
ting
dat
a
ML62Q1300
group
ML62Q1500
group
ML62Q1700
group
16
pi
n
pr
o
duc
t
20
pi
n
pr
o
duc
t
2
4
pi
n
pr
o
duc
t
32
pi
n
pr
o
duc
t
48
pi
n
pr
o
duc
t
52
pi
n
pr
o
duc
t
64
pi
n
pr
o
duc
t
80
pi
n
pr
o
duc
t
100
pi
n pr
odu
c
t
48
pi
n
pr
o
duc
t
52
pi
n
pr
o
duc
t
64
pi
n
pr
o
duc
t
80
pi
n
pr
o
duc
t
100
pi
n pr
odu
c
t
P03
P0MOD3
1
0x3B
●
●
●
●
●
●
●
●
●
●
●
●
●
●
P04
P0MOD4
1
0x3B
●
●
●
●
●
●
●
●
●
●
●
●
●
●
P15
P1MOD5
2
0x3B
-
-
-
●
●
●
●
●
●
●
●
●
●
●
P16
P1MOD6
2
0x3B
-
-
-
●
●
●
●
●
●
●
●
●
●
●
P26
P2MOD6
3
0x3B
●
●
●
●
●
●
●
●
●
●
●
●
●
●
P27
P2MOD7
3
0x3B
●
●
●
●
●
●
●
●
●
●
●
●
●
●
P03
P0MOD3
4
0x3B
-
-
-
-
-
-
-
-
-
●
●
●
●
●
P02
P0MOD2
4
0x3B
-
-
-
-
-
-
-
-
-
●
●
●
●
●
P46
P4MOD6
5
0x3B
-
-
-
-
-
-
-
-
-
●
●
●
●
●
P47
P4MOD7
5
0x3B
-
-
-
-
-
-
-
-
-
●
●
●
●
●
n : General port number (0 to 3) m : Bit number (0 to 7)
●
: Available - : Unavailable
[Note]
Ÿ
Use external pull-up resistors for SDA pin and SCL pin referring to the I
2
C bus specification. The internal
pull-up resistors unsatisfy the I
2
C bus specification. See the data sheet for each product for the value of
internal pull-up resistors.
Ÿ
If powering off this LSI in the slave mode, it disables communications of other devices on the I
2
C bus.
Remain the power to this LSI when it works as a slave mode until the master device is powered off.
Ÿ
When using the master function, do not connect multiple master devices on the I
2
C bus.
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...