Z32F0641MCU Datasheet, PDF (138/205 Pages) Zilog, Inc. – High Performance low-power Cortex-M3 core

Z32F0641 Product Specification
I2C Interface
14. I²C Interface
Overview
Inter-Integrated Circuit (I²C) bus serves as an interface between the microcontroller and the serial I²C bus. It
provides two wires, serial bus interface to a large number of popular devices and allows parallel-bus systems
to communicate bidirectionally with the I²C-bus.
 Master and slave operation
 Programmable communication speed
 Multi-master bus configuration
 7-bit addressing mode
 Standard data rate of 100/400 kbps
 STOP signal generation and detection
 START signal generation
 ACK bit generation and detection
SDA
SCL
Debounce
enable
Slave Addr. Register1
Noise
Canceller
(debounce
)
1 ^SDAIN
F/F
0
(I2CSAR1)
I
8-bit Shift Register
n
(SHFTR)
t
e
r
SDAOU
T
SDA
Out Controller
Data Out Register
(I2CDR)
n
a
l
B
Debounce
enable _SCLI
SCL High Period
Register
u
s
Noise
Canceller
(debounce
)
N
1
0
SCL
Out Controller
S(CI2LCLSowCLPHeRrio) d
Register
(I2CSCLLR)
SDAHoldTimeRegister
(I2CDAHR)
L
i
n
e
SCLOU
T
Figure 14.1 I²C Block Diagram
PS034404-0417
PRELIMINARY
135