UPD78F1144AGK-GAJ-AX Renesas Electronics America, UPD78F1144AGK-GAJ-AX Datasheet - Page 158
UPD78F1144AGK-GAJ-AX
Manufacturer Part Number
UPD78F1144AGK-GAJ-AX
Description
MCU 16BIT 78K0R/KX3 64-LQFP
Manufacturer
Renesas Electronics America
Series
78K0R/Kx3r
Datasheet
1.UPD78F1142AGA-HAB-AX.pdf
(880 pages)
Specifications of UPD78F1144AGK-GAJ-AX
Core Processor
78K/0R
Core Size
16-Bit
Speed
20MHz
Connectivity
3-Wire SIO, I²C, LIN, UART/USART
Peripherals
DMA, LVD, POR, PWM, WDT
Number Of I /o
50
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1.8 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
Lead free / RoHS Compliant
Eeprom Size
-
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Company:
Part Number:
UPD78F1144AGK-GAJ-AX
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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5.4 System Clock Oscillator
5.4.1 X1 oscillator
pins.
follows.
5.4.2 XT1 oscillator
156
The X1 oscillator oscillates with a crystal resonator or ceramic resonator (2 to 20 MHz) connected to the X1 and X2
An external clock can also be input. In this case, input the clock signal to the EXCLK pin.
To use the X1 oscillator, set bits 7 and 6 (EXCLK, OSCSEL) of the clock operation mode control register (CMC) as
• Crystal or ceramic oscillation: EXCLK, OSCSEL = 0, 1
• External clock input:
When the X1 oscillator is not used, set the input port mode (EXCLK, OSCSEL = 0, 0).
When the pins are not used as input port pins, either, see Table 2-2 Connection of Unused Pins.
Figure 5-10 shows an example of the external circuit of the X1 oscillator.
Cautions are listed on the next page.
The XT1 oscillator oscillates with a crystal resonator (standard: 32.768 kHz) connected to the XT1 and XT2 pins.
To use the XT1 oscillator, set bit 4 (OSCSELS) of the clock operation mode control register (CMC) to 1.
When the XT1 oscillator is not used, set the input port mode (OSCSELS = 0).
When the pins are not used as input port pins, either, see Table 2-2 Connection of Unused Pins.
Figure 5-11 shows an example of the external circuit of the XT1 oscillator.
Cautions are listed on the next page.
(a) Crystal or ceramic oscillation
Figure 5-11. Example of External Circuit of XT1 Oscillator (Crystal Oscillation)
Crystal resonator
or
ceramic resonator
Figure 5-10. Example of External Circuit of X1 Oscillator
EXCLK, OSCSEL = 1, 1
V
X1
X2
SS
CHAPTER 5 CLOCK GENERATOR
User’s Manual U17854EJ9V0UD
32.768
kHz
V
XT1
XT2
SS
External clock
(b) External clock
EXCLK
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