UPD78F8056 Renesas Electronics Corporation., UPD78F8056 Datasheet - Page 14

• Manufacturer Part Number: UPD78F8056
• Description: 16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

9. CLOCK GENERATOR
of system clocks are selectable.
<1> X1 oscillator
<2> Internal high-speed oscillator
<3> 20 MHz internal high-speed oscillator
<4> Supply from the EXCLK pin
Select <4> Supply from the EXCLK pin case of connects as 6. CONNECTION BETWEEN MCU AND RF RANSCEIVER.
The clock generator is basically the same as the one in 78K0R/KF3-L.
Please refer to user manual of 78K0R/KF3-L (U19459E) for the details.
12
The clock generator generates the clock to be supplied to the CPU and peripheral hardware. The following three kinds
This circuit oscillates a clock of fx = 2 to 20 MHz by connecting a resonator to X1 and X2.
This circuit oscillates clocks of f
with this internal high-speed oscillation clock.
This circuit oscillates clocks of f
An external main system clock (f
IH
IH20
EX
= 1, 8 MHz (TYP.). After a reset release, the CPU always starts operating
= 20 MHz (TYP.).
= 2 to 20 MHz) can also be supplied from the EXCLK pin.
Preliminary Product Information U19858EJ1V0PM
μPD78F8056, 78F8057, 78F8058