UPD784224 Datasheet, PDF (43/92 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCONTROLLERS

µPD784224, 784225, 784224Y, 784225Y
Figure 7-13. Block Diagram in I²C Bus Mode
SDA0
SCL0
8
Direction controller
8
Internal bus
8
Slave address register
(SVA0)
Serial I/O shift
register 0 (SIO0)
Output latch
Wakeup
controller
Start condition/
acknowledge
detector
Stop condition
detector
Serial clock
counter
Serial clock
controller
Acknowledge
generator
Interrupt
generator
Selector
INTIIC0
TO2/18 to TO2/68
fXX/24 to fXX/178
7.8 Clock Output Function
Clocks of the following frequencies can be output.
• 97.7 kHz/195 kHz/391 kHz/781 kHz/1.56 MHz/3.13 MHz/6.25 MHz/12.5 MHz
(main system clock: 12.5 MHz)
• 32.768 kHz (subsystem clock: 32.768 kHz)
Figure 7-14. Block Diagram of Clock Output Function
fXX
fXX/2
fXX/2²
fXX/2³
fXX/2⁴
fXX/2⁵
fXX/2⁶
fXX/2⁷
fXT
Synchronizer
Output controller
PCL
Data Sheet U12376EJ1V0DS00
43