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RL78/G1A
CHAPTER 30 ELECTRICAL SPECIFICATIONS (G: INDUSTRIAL APPLICATIONS T
A
=
−
40 to +105
°
C)
R01UH0305EJ0200 Rev.2.00 931
Jul 04, 2013
(5) Communication at different potential (1.8 V, 2.5 V) (UART mode) (dedicated baud rate generator output) (1/2)
(TA = −40 to +105°C, 2.4 V ≤ EVDD0 ≤ VDD ≤ 3.6 V, VSS = EVSS0 = 0 V)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
fMCK/12 bps
2.7 V ≤ EVDD0 ≤ 3.6 V,
2.3 V ≤ V
b ≤ 2.7 V
Theoretical value of the
maximum transfer rate
f
CLK = 32 MHz, fMCK = fCLK
2.6 Mbps
fMCK/12 bps
Transfer rate
Note 1
Reception
2.4 V ≤ EV
DD0 < 3.3 V,
1.6 V ≤ V
b ≤ 2.0 V
Theoretical value of the
maximum transfer rate
f
CLK = 32 MHz, fMCK = fCLK
2.6
Note 2
Mbps
Notes 1. Transfer rate in the SNOOZE mode is 4800 bps.
2. The following conditions are required for low-voltage interface when EV
DD0 < VDD.
2.4 V ≤ EV
DD0 < 2.7 V : MAX. 1.3 Mbps
Caution Select the TTL input buffer for the RxDq pin and the N-ch open drain output (V
DD tolerance (When 25- to
48-pin products)/EV
DD tolerance (When 64-pin products)) mode for the TxDq pin by using port input
mode register g (PIMg) and port output mode register g (POMg). For V
IH and VIL, see the DC
characteristics with TTL input buffer selected.
Remarks 1. V
b[V]: Communication line voltage
2. q: UART number (q = 0 to 2), g: PIM and POM number (g = 0, 1)
3. f
MCK: Serial array unit operation clock frequency
(Operation clock to be set by the CKSmn bit of serial mode register mn (SMRmn). m: Unit number,
n: Channel number (mn = 00 to 03, 10, 11)
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