UPD78F0138HGK-9ET-A Renesas Electronics America, UPD78F0138HGK-9ET-A Datasheet - Page 134

• Manufacturer Part Number: UPD78F0138HGK-9ET-A
• Description: MCU 8BIT 60K FLASH 64TQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx1+r

Specifications of UPD78F0138HGK-9ET-A

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: 3-Wire SIO, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 42
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

5.8 Clock Switching Flowchart and Register Setting
5.8.1 Switching from internal oscillation clock to high-speed system clock
132
Internal oscillation
High-speed system
Note Check the oscillation stabilization wait time of the high-speed system clock oscillator after reset release
clock operation
clock operation
Register value
after reset
Figure 5-14. Switching from internal oscillation Clock to High-Speed System Clock (Flowchart)
using the OSTC register and then switch to the high-speed system clock operation after the oscillation
stabilization wait time has elapsed. The OSTS register setting is valid only after STOP mode is released by
interrupt during high-speed system clock operation.
High-speed system clock
Internal oscillation
(dividing set PCC)
oscillation stabilization
clock operation
time has not elapsed
High-speed system clock operation
CHAPTER 5 CLOCK GENERATOR
User’s Manual U16899EJ3V0UD
Each processing
OSTS = 05H
OSTC check
OSTC = 00H
RCM = 00H
MCM = 00H
MOC = 00H
PCC setting
MCM.0
PCC = 00H
After reset
High-speed system clock oscillation stabilization time has elapsed
1
Note
Note
; f
; Internal oscillator oscillation
; Internal oscillation clock operation
; High-speed system clock oscillation
; Oscillation stabilization time status register
; Oscillation stabilization time f
CPU
; High-speed system clock oscillation
stabilization time status check
MCM.1 (MCS) is changed from 0 to 1
= f
R
XP
/2
16