Datasheet
RL78/L12  CHAPTER 30 ELECTRICAL SPECIFICATIONS (A, G: T
A = -40 to +85°C) 
R01UH0330EJ0200 Rev.2.00      855 
Dec 13, 2013 
30.1 Absolute Maximum Ratings 
Absolute Maximum Ratings (T
A = 25°C)  (1/3) 
Parameter Symbols  Conditions   Ratings  Unit 
Supply voltage  VDD VDD = EVDD  −0.5 to +6.5  V 
EVDD VDD = EVDD  −0.5 to +6.5  V 
EVSS  −0.5 to +0.3  V 
REGC pin input voltage  VIREGC REGC 
−0.3 to +2.8 
and −0.3 to VDD + 0.3
Note 1
V 
Input voltage  VI1 
P10 to P17, P30 to P32, P40 to P43, P50 to P54, 
P70 to P74, P120, P125 to P127,P140 to P147 
−0.3 to EV
DD +0.3 
and −0.3 to V
DD + 0.3
Note 2
V 
VI2  P60, P61 (N-ch open-drain) 
−0.3 to EV
DD +0.3 
and −0.3 to V
DD + 0.3
Note 2
V 
VI3  P20, P21, P121 to P124, P137, EXCLK, 
EXCLKS, RESET 
−0.3 to VDD + 0.3
Note 2
 V 
Output voltage  VO1  P10 to P17, P30 to P32, P40 to P43, 
P50 to P54, P60, P61, P70 to P74, P120, 
P125 to P127, P130, P140 to P147 
−0.3 to EV
DD + 0.3 
and −0.3 to V
DD + 0.3
Note 2
V 
VO2 P20, P21  −0.3 to VDD + 0.3
 Note 2
 V 
Analog input voltage  VAI1  ANI16 to ANI23 
−0.3 to EV
DD + 0.3 and 
−0.3 to AV
REF(+) + 0.3 
Notes 2, 3
V 
VAI2 ANI0, ANI1 
−0.3 to V
DD + 0.3 and 
−0.3 to AV
REF(+) + 0.3 
Notes 2, 3
V 
Notes 1.  Connect the REGC pin to Vss via a capacitor (0.47 to 1 
μ
F). This value regulates the absolute 
maximum rating of the REGC pin. Do not use this pin with voltage applied to it. 
  2.  Must be 6.5 V or lower. 
 3. Do not exceed AV
REF(+) + 0.3 V in case of A/D conversion target pin. 
Caution  Product quality may suffer if the absolute maximum rating is exceeded even momentarily for any 
parameter. That is, the absolute maximum ratings are rated values at which the product is on the 
verge of suffering physical damage, and therefore the product must be used under conditions that 
ensure that the absolute maximum ratings are not exceeded. 
Remarks 1.  Unless specified otherwise, the characteristics of alternate-function pins are the same as those of the 
port pins. 
 2. AV
REF(+) : + side reference voltage of the A/D converter. 
 3. V
SS : Reference voltage 
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