UPD78F0386GK-8EU-A Renesas Electronics America, UPD78F0386GK-8EU-A Datasheet - Page 126

• Manufacturer Part Number: UPD78F0386GK-8EU-A
• Description: MCU 96KB FLASH 5KB RAM
• Manufacturer: Renesas Electronics America
• Series: 78K0/Lx2r

Specifications of UPD78F0386GK-8EU-A

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: LCD, LVD, POR, PWM, WDT
• Number Of I /o: 26
• Program Memory Size: 96KB (96K x 8)
• Program Memory Type: FLASH
• Ram Size: 5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

(6) Main clock mode register (MCM)
124
This register selects the main system clock supplied to CPU clock and clock supplied to peripheral hardware
clock.
MCM can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to 00H.
Address: FFA1H
Symbol
MCM
Note Bit 1 is read-only.
Cautions 1. XSEL can be changed only once after a reset release.
XSEL
MCS
7
0
0
0
1
1
0
1
After reset: 00H
2. A clock other than f
Figure 5-6. Format of Main Clock Mode Register (MCM)
Operates with internal high-speed oscillation clock
Operates with high-speed system clock
regardless of the setting of XSEL and MCM0.
MCM0
Watchdog timer (operates with internal low-speed oscillation clock)
When “f
(operates with internal low-speed oscillation clock)
Peripheral hardware selects the external clock as the clock source
(Except when the external count clock of TM0n (n = 0, 1) is selected (TI00n pin
valid edge))
6
0
0
1
0
1
R/W
CHAPTER 5 CLOCK GENERATOR
Internal high-speed oscillation clock
(f
High-speed system clock (f
RL
RH
”, “f
Selection of clock supplied to main system clock and peripheral hardware
)
Note
User’s Manual U17504EJ2V0UD
5
0
RL
Main system clock (f
/2
7
”, or “f
PRS
4
0
Main system clock status
RL
is supplied to the following peripheral functions
/2
9
” is selected as the count clock for 8-bit timer H1
XH
XP
)
)
3
0
Internal high-speed oscillation clock
(f
High-speed system clock (f
RH
XSEL
Peripheral hardware clock (f
)
<2>
MCS
<1>
XH
)
MCM0
<0>
PRS
)