R5F100GC datasheet(91/202 Pages) RENESAS

91 / 202 page

RL78/G13

2. ELECTRICAL SPECIFICATIONS (TA = -40 to +85

C)

Page 91 of 196

R01DS0131EJ0330 Rev.3.30

Mar 31, 2016

(6) Communication at different potential (1.8 V, 2.5 V, 3 V) (UART mode) (1/2)

(TA =

40 to +85C, 1.8 V  EVDD0 = EVDD1  VDD  5.5 V, VSS = EVSS0 = EVSS1 = 0 V)

HS (high-

speed main)

Mode

LS (low-speed

main) Mode

LV (low-

voltage main)

Mode

Parameter

Symbol

Conditions

MIN.

MAX.

MIN.

MAX.

MIN.

MAX.

Unit

fMCK/6

Note 1

fMCK/6

Note 1

fMCK/6

Note 1

bps

4.0 V

 EVDD0  5.5 V,

2.7 V

 Vb  4.0 V

Theoretical value

of the maximum

transfer rate

fMCK = fCLK

Note 4

5.3

1.3

0.6

Mbps

fMCK/6

Note 1

fMCK/6

Note 1

fMCK/6

Note 1

bps

2.7 V

 EVDD0 < 4.0 V,

2.3 V

 Vb  2.7 V

Theoretical value

of the maximum

transfer rate

fMCK = fCLK

Note 4

5.3

1.3

0.6

Mbps

fMCK/6

Notes 1 to 3

fMCK/6

Notes 1, 2

fMCK/6

Notes 1, 2

bps

Transfer

rate

Recep-

tion

1.8 V

 EVDD0 < 3.3 V,

1.6 V

 Vb  2.0 V

Theoretical value

of the maximum

transfer rate

fMCK = fCLK

Note 4

5.3

1.3

0.6

Mbps

Notes 1. Transfer rate in the SNOOZE mode is 4800 bps only.

2. Use it with EVDD0

Vb.

3. The following conditions are required for low voltage interface when EVDD0 < VDD.

2.4 V

 EVDD0 < 2.7 V : MAX. 2.6 Mbps

1.8 V

 EVDD0 < 2.4 V : MAX. 1.3 Mbps

4. The maximum operating frequencies of the CPU/peripheral hardware clock (fCLK) are:

HS (high-speed main) mode:

32 MHz (2.7 V

 VDD  5.5 V)

16 MHz (2.4 V

 VDD  5.5 V)

LS (low-speed main) mode:

8 MHz (1.8 V

 VDD  5.5 V)

LV (low-voltage main) mode:

4 MHz (1.6 V

 VDD  5.5 V)

Caution

Select the TTL input buffer for the RxDq pin and the N-ch open drain output (VDD tolerance (When

20- to 52-pin products)/EVDD tolerance (When 64- to 128-pin products)) mode for the TxDq pin by

using port input mode register g (PIMg) and port output mode register g (POMg). For VIH and VIL,

see the DC characteristics with TTL input buffer selected.

Remarks 1.

Vb[V]: Communication line voltage

q: UART number (q = 0 to 3), g: PIM and POM number (g = 0, 1, 8, 14)

fMCK: 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 to 13)

UART2 cannot communicate at different potential when bit 1 (PIOR1) of peripheral I/O redirection

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