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Renesas rl78 User Manual

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RL78/G1A 
 
CHAPTER  5   CLOCK  GENERATOR 
R01UH0305EJ0200  Rev.2.00 
 
 
181  
Jul 04, 2013 
(1) X1 oscillation:  
As of February, 2013 (3/3) 
Recommended Circuit 
Constants (reference) 
Oscillation Voltage 
Range (V) 
Manufacturer Resonator Part 
Number  SMD/
Lead
Frequency
(MHz) 
Flash 
operation 
mode
Note 1
C1 (pF)
C2 (pF) 
Rd (k
Ω) MIN.  MAX.
PBRV4.00MR50Y000 
SMD
4.0 LV 15 15  0 1.6 
3.6 
PBRV4.00MR50Y000 SMD
4.0 
15 
15 
0 
PRQV8.00CR5010Y000 SMD
8.0 
LS 
10 10  0 
1.8 3.6 
KYOCERA 
Corporation
Note 2
 
Ceramic 
resonator 
PRQV8.00CR5010Y000 
SMD
8.0 HS 10  10  0  2.4 3.6 
NX8045GE SMD
4.0 
LV 
6 
6 
0 
1.6 
3.6 
NX8045GE SMD
4.0 
6 
6 
0 
NX8045GB SMD
8.0 
LS 
0 0 0 
1.8 3.6 
NX8045GB SMD
8.0 
0 
0 
0 
NX3225GB SMD
16.0 
1 
1 
0 
2.4 3.6 
Nihon Dempa 
Kogyo  
Co., Ltd.
Note 3
 
Crystal 
resonator 
NX2520SA
Note 4
 SMD
20.0 
HS 
0 0 0 
2.7 
3.6 
 
Notes 1.  Set the flash operation mode by using CMODE1 and CMODE0 bits of the option byte (000C2H/010C2H). 
 2.  When using these oscillators, contact KYOCERA Corporation (http://global.kyocera.com/).  
 
3.  When using these oscillators, contact Nihon Dempa Kogyo Co., Ltd. (http://www.ndk.com/en/index.html).  
 
4.  This resonator can operate at up to 85
°C. For details about the products that can operate at up to 105C, 
contact the manufacturer of the resonator.  
 
Remark  Relationship between operation voltage width, operation frequency of CPU and operation mode is as below. 
HS (High speed main) mode:   2.7 V 
≤ V
DD
 
≤ 3.6 V@1 MHz to 32 MHz (When X1 oscillation: 1 MHz to 20 MHz) 
2.4 V 
≤ V
DD
 
≤ 3.6 V@1 MHz to 16 MHz 
LS (Low speed main) mode:   1.8 V 
≤ V
DD
 
≤ 3.6 V@1 MHz to 8 MHz 
LV (Low voltage main) mode:   1.6 V 
≤ V
DD
 
≤ 3.6 V@1 MHz to 4 MHz 
 
(2) XT1 oscillation:  
As of July, 2013 
Recommended Circuit 
Constants (reference) 
Oscillation Voltage 
Range (V) 
Manufacturer Resonator Part Number  SMD/ 
Lead 
Frequency
(MHz) 
Load 
Capacitance 
CL (pF) 
XT1 oscillation 
mode 
C3 (pF) C4 (pF)  Rd (k
Ω) MIN.
MAX.
Normal 
oscillation 
8 9 0 
Low power 
consumption 
oscillation 
8 8 0 
NX3215SA 32.768
6.0 
Ultra-low power 
consumption 
oscillation 
7 8 0 
Normal 
oscillation 
8 9 0 
Low power 
consumption 
oscillation 
8 8 0 
Nihon Dempa 
Kogyo  
Co., Ltd.
Note
 
Crystal 
resonator 
NX2012SA 
SMD 
32.768
6.0 
Ultra-low power 
consumption 
oscillation 
7 8 0 
1.6 3.6 
 
Note  When using these oscillators, contact Nihon Dempa Kogyo Co., Ltd. (http://www.ndk.com/en/index.html).  
 
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