UPD784218 Datasheet, PDF (43/92 Pages) NEC – 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS

SDA0
SCL0
µPD784218, 784218Y
Figure 8-13. Block Diagram of I²C Bus Mode
Internal bus
8
Direction controller
8
8
Slave address register
(SVA0)
Serial I/O shift
register 0 (SIO0)
Output latch
Start condition/acknowledge
detector
Stop condition detector
Serial clock counter
Serial clock controller
Wake-up
controller
Acknowledge
generator
Interrupt
generator
Selector
INTIIC0
TO2/18 to TO2/68
fXX/24 to fXX/178
8.8 Clock Output Function
Clocks of the following frequencies can be output as clock output.
• 97.7 kHz/195 kHz/391 kHz/781 kHz/1.56 MHz/3.13 MHz/6.25 MHz/12.5 MHz
(@ 12.5 MHz operation with main system clock)
• 32.768 kHz (@ 32.768 kHz operation with subsystem clock)
Figure 8-14. 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 U12304EJ2V0DS00
43