RL78 datasheet(86/100 Pages) RENESAS

86 / 100 page

RL78/G14

2. ELECTRICAL SPECIFICATIONS

R01DS0053EJ0100 Rev. 1.00

Page 86 of 97

Feb 21, 2012

Caution

The pins mounted depend on the product. Refer to 1.3.1 30-pin products to 1.3.10 100-pin products.

Simplified I2C mode connection diagram (during communication at different potential)

Simplified I2C mode serial transfer timing (during communication at different potential)

Caution

Select the TTL input buffer and the N-ch open drain output (EVDD0 tolerance) mode for the SDAr pin and the N-ch

open drain output (EVDD0 tolerance) mode for the SCLr pin by using port input mode register g (PIMg) and port

output mode register g (POMg).

Remark 1. Rb[

]: Communication line (SDAr, SCLr) pull-up resistance, Cb[F]: Communication line (SDAr, SCLr) load capacitance,

Vb[V]: Communication line voltage

Remark 2.

r: IIC number (r = 00, 01, 10, 11, 20, 30, 31), g: PIM, POM number (g = 0, 1, 3 to 5, 14)

Remark 3.

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 (m = 0, 1),

n: Channel number (n = 0, 3), mn = 00 to 03, 10, 12, 13)

Remark 4.

VIH and VIL below are observation points for the AC characteristics of the serial array unit when communicating at

different potentials in simplified I2C mode.

4.0 V

 EVDD0  5.5 V, 2.7 V  Vb  4.0 V: VIH = 2.2 V, VIL = 0.8 V

2.7 V

 EVDD0 < 4.0 V, 2.3 V  Vb  2.7 V: VIH = 2.0 V, VIL = 0.5 V

1.8 V

 EVDD0 < 3.3 V, 1.6 V  Vb  2.0 V: VIH = 1.50 V, VIL = 0.32 V

SDAr

SCLr

User’s device

SDA

SCL

RL78/G14

SDAr

SCLr

1/fSCL

tLOW

tHIGH

tSU: DAT

tHD: DAT

RL78 Datasheet(PDF) 86 Page - Renesas Technology Corp

RL78 Datasheet(HTML) 86 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

Datasheet Download

Link URL