UPD78F1506GF-GAT-AX Renesas Electronics America, UPD78F1506GF-GAT-AX Datasheet - Page 213

• 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
5.1 Functions of Clock Generator
R01UH0004EJ0401 Rev.4.01
Jul 2, 2010
The clock generator generates the clock to be supplied to the CPU and peripheral hardware.
The following three kinds of system clocks and clock oscillators are selectable.
(1) Main system clock
Remark f
<1> X1 oscillator
<2> Internal high-speed oscillator
<3> 20 MHz internal high-speed oscillation clock oscillator
An external main system clock (f
main system clock input can be disabled by executing the STOP instruction or setting of MSTOP.
As the main system clock, a high-speed system clock (X1 clock or external main system clock) or internal high-
speed oscillation clock can be selected by setting of MCM0 (bit 4 of the system clock control register (CKC)).
This circuit oscillates a clock of f
Oscillation can be stopped by executing the STOP instruction or setting of MSTOP (bit 7 of the clock
operation status control register (CSC)).
This circuit oscillates clocks of f
always starts operating with this internal high-speed oscillation clock.
executing the STOP instruction or setting HIOSTOP (bit 0 of CSC).
This circuit oscillates a clock of f
the 20 MHz internal high-speed oscillation control register (DSCCTL) to 1 with V
be stopped by setting DSCON to 0.
Note To use the internal high-speed oscillation clock, use the option byte to set the frequency (1 MHz, 8
f
f
f
X
IH
IH20
EX
:
:
:
: 20 MHz internal high-speed oscillation clock frequency
X1 clock oscillation frequency
Internal high-speed oscillation clock frequency
External main system clock frequency
MHz, or 20 MHz) in advance (for details, see CHAPTER 26 OPTION BYTE). Also, the internal high-
speed oscillator automatically starts oscillating after reset release. To use the 20 MHz internal high-
speed oscillator to operate the microcontroller, oscillation is started by setting bit 0 (DSCON) of the 20
MHz internal high-speed oscillation control register (DSCCTL) to 1.
CHAPTER 5 CLOCK GENERATOR
EX
= 2 to 20 MHz) can also be supplied from the EXCLK/X2/P122 pin. An external
Note
X
IH20
IH
= 2 to 20 MHz by connecting a resonator to X1 and X2.
= 1 MHz (TYP.) or f
= 20 MHz (TYP.). Oscillation can be started by setting bit 0 (DSCON) of
IH
Note
= 8 MHz (TYP.). After a reset release, the CPU
CHAPTER 5 CLOCK GENERATOR
Oscillation can be stopped by
DD
≥ 2.7 V. Oscillation can
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