User’s Manual U11969EJ3V0UM00
233
CHAPTER 8 SERIAL INTERFACE FUNCTION
Figure 8-12. Block Diagram of I
2
C Bus
Internal bus
IIC control register (IICC)
IIC status register (IICS)
Internal bus
Data retention time
correction circuit
Acknowledge
detection circuit
Wake-up
control circuit
Start condition
detection circuit
Acknowledge
detection circuit
SDA
N-ch open-
drain output
N-ch open-
drain output
IICE LREL WREL SPIE WTIM ACKE STT SPT
MSTS ALD EXC COI TRC ACKD STD SPD
CLD DAD SMC DFC CL1 CL0
Slave address register (SVA)
SO latch
CL0 CL1
SET
CLEAR
Coincidence signal
D
Q
Noise elimination circuit
DFC
Stop condition
detection circuit
Noise elimination circuit
Serial clock
counter
Noise elimination circuit
Prescaler
IIC clock selection register (IICL)
Internal system clock ( )
φ
Serial clock
control circuit
Interrupt request signal
generation circuit
INTIIC
Serial clock wait
control circuit
IIC shift register (IIC)
RESET
DFC
DFC
SCL
Содержание V854 UPD703006
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