UPD78F1506GF-GAT-AX Renesas Electronics America, UPD78F1506GF-GAT-AX Datasheet - Page 218

• Manufacturer Part Number: UPD78F1506GF-GAT-AX
• Description: MCU 16BIT 78K0R/LX3 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Lx3r

Specifications of UPD78F1506GF-GAT-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LCD, LVD, POR, PWM, WDT
• Number Of I /o: 78
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x12b, D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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78K0R/Lx3
(2) Clock operation status control register (CSC)
R01UH0004EJ0401 Rev.4.01
Jul 2, 2010
This register is used to control the operations of the high-speed system clock, internal high-speed oscillation clock,
and subsystem clock (except the 20 MHz internal high-speed oscillation clock and internal low-speed oscillation clock).
CSC can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to C0H.
Address: FFFA1H
Symbol
CSC
Caution 1. After reset release, set the clock operation mode control register (CMC) before
HIOSTOP
XTSTOP
MSTOP
MSTOP
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Figure 5-3. Format of Clock Operation Status Control Register (CSC)
0
1
0
1
0
1
After reset: C0H
starting X1 oscillation as set by MSTOP or XT1 oscillation as set by XTSTOP.
X1 oscillator operating
X1 oscillator stopped
XT1 oscillator operating
XT1 oscillator stopped
Internal high-speed oscillator operating
Internal high-speed oscillator stopped
• Keep the wiring length between the XT1 and XT2 pins and resonator as short as
• Configure the circuit board by using material with little parasitic capacitance and
• Place a ground pattern that has the same potential as V
• Do not cross the signal lines between the XT1 and XT2 pins and the resonator
• Moisture absorption by the circuit board and condensation on the board in a
• Coat the surface of the circuit board by using material that does not generate
XTSTOP
possible and parasitic capacitance and wire resistance as small as possible. This
is particularly important when super-low-consumption oscillation (AMPHS1 = 1) is
selected.
wire resistance.
XT1 oscillator.
with other signal lines. Do not route the signal lines near a signal line through
which a high fluctuating current flows.
highly humid environment may cause the impedance between the XT1 and XT2
pins to drop and disable oscillation. When using the circuit board in such an
environment, prevent the circuit board from absorbing moisture by taking
measures such as coating the circuit board.
capacitance or leakage between the XT1 and XT2 pins.
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X1 oscillation mode
XT1 oscillation mode
R/W
5
0
Internal high-speed oscillation clock operation control
High-speed system clock operation control
Subsystem clock operation control
External clock from EXCLK
pin is valid
External clock from EXCLK
pin is invalid
4
0
External clock input mode
3
0
CHAPTER 5 CLOCK GENERATOR
2
0
Input port mode
−
Input port mode
SS
1
0
(if possible) around the
−
HIOSTOP
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