UPD78F1506GF-GAT-AX Renesas Electronics America, UPD78F1506GF-GAT-AX Datasheet - Page 234

• 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
5.5 Clock Generator Operation
mode (see Figure 5-1).
78K0R/Lx3 microcontrollers, thus enabling the following.
(1) Enhancement of security function
(2) Improvement of performance
R01UH0004EJ0401 Rev.4.01
Jul 2, 2010
The clock generator generates the following clocks and controls the operation modes of the CPU, such as standby
• Main system clock f
• Subsystem clock f
• Subsystem selection clock f
• Internal low-speed oscillation clock f
• CPU/peripheral hardware clock f
The CPU starts operation when the internal high-speed oscillator starts outputting after a reset release in the
When the power supply voltage is turned on, the clock generator operation is shown in Figure 5-13 and Figure 5-14.
When the X1 clock is set as the CPU clock by the default setting, the device cannot operate if the X1 clock is
damaged or badly connected and therefore does not operate after reset is released. However, the start clock of the
CPU is the internal high-speed oscillation clock, so the device can be started by the internal high-speed oscillation
clock after a reset release. As a result, reset sources can be detected by software and the minimum amount of safety
processing can be done during anomalies to ensure that the system terminates safely.
Because the CPU can be started without waiting for the X1 clock oscillation stabilization time, the total performance
can be improved.
• High-speed system clock f
• Internal high-speed oscillation clock f
• 20 MHz internal high-speed oscillation clock f
X1 clock f
External main system clock f
1 MHz internal high-speed oscillation clock f
8 MHz internal high-speed oscillation clock f
X
SUB
MAIN
SUBC
MX
EX
CLK
IL
IH
IH1
IH8
IH20
CHAPTER 5 CLOCK GENERATOR
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