Datasheet

RL78/L12 CHAPTER 30 ELECTRICAL SPECIFICATIONS (A, G: T
A = -40 to +85°C)
R01UH0330EJ0200 Rev.2.00 892
Dec 13, 2013
(7) Communication at different potential (1.8 V, 2.5 V, 3 V) (CSI mode) (slave mode, SCKp... external clock input)
(TA = −40 to +85°C, 1.8 V ≤ EVDD = VDD ≤ 5.5 V, VSS = EVSS = 0 V) (2/2)
Parameter Symbol Conditions
HS (high-
speed main)
mode
LS (low-speed
main) mode
LV (low-
voltage main)
mode
Unit
MIN. MAX. MIN. MAX. MIN. MAX.
Delay time from SCKp↓
to SOp output
Note 5
t
KSO2 4.0 V ≤ EVDD ≤ 5.5 V, 2.7 V ≤ Vb ≤ 4.0 V,
C
b = 30 pF, Rb = 1.4 kΩ
2/f
MCK
+ 120
2/fMCK
+ 573
2/fMCK
+ 573
ns
2.7 V ≤ EVDD < 4.0 V, 2.3 V ≤ Vb ≤ 2.7 V,
C
b = 30 pF, Rb = 2.7 kΩ
2/f
MCK
+ 214
2/fMCK
+ 573
2/fMCK
+ 573
ns
2.4 V ≤ EVDD < 3.3 V, 1.6 V ≤ Vb ≤ 2.0 V,
C
b = 30 pF, Rb = 5.5 kΩ
2/f
MCK
+ 573
2/fMCK
+ 573
2/fMCK
+ 573
ns
1.8 V ≤ EVDD < 3.3 V,
1.6 V ≤ V
b ≤ 2.0 V
Note 2
,
C
b = 30 pF, Rb = 5.5 kΩ
2/f
MCK
+ 573
2/fMCK
+ 573
ns
Notes 1. Transfer rate in the SNOOZE mode : MAX. 1 Mbps
2. Use it with EV
DD ≥ Vb.
3. When DAPmn = 0 and CKPmn = 0, or DAPmn = 1 and CKPmn = 1. The SIp setup time becomes “to SCKp↓”
when DAPmn = 0 and CKPmn = 1, or DAPmn = 1 and CKPmn = 0.
4. When DAPmn = 0 and CKPmn = 0, or DAPmn = 1 and CKPmn = 1. The SIp hold time becomes “from SCKp↓”
when DAPmn = 0 and CKPmn = 1, or DAPmn = 1 and CKPmn = 0.
5. When DAPmn = 0 and CKPmn = 0, or DAPmn = 1 and CKPmn = 1. The delay time to SOp output becomes
“from SCKp↑” when DAPmn = 0 and CKPmn = 1, or DAPmn = 1 and CKPmn = 0.
Caution Select the TTL input buffer for the SIp pin and SCKp pin and the N-ch open drain output (V
DD tolerance
(32-pin to 52-pin products)/EVDD tolerance (64-pin products)) mode for the SOp 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.
CSI mode connection diagram (during communication at different potential)
User's device
<Slave
>
SCKp
SOp
SCK
SI
SIp
SO
V
b
R b
RL78
microcontroller
Remarks 1. R
b[Ω]:Communication line (SOp) pull-up resistance, Cb[F]: Communication line (SOp) load capacitance,
V
b[V]: Communication line voltage
2. p: CSI number (p = 00, 01), m: Unit number (m = 0), n: Channel number (n = 0, 1),
g: PIM and POM number (g = 1)
3. f
MCK: Serial array unit operation clock frequency
(Operation clock to be set by the serial clock select register m (SPSm) and the CKSmn bit of serial mode
register mn (SMRmn). m: Unit number, n: Channel number (mn = 00, 01))
<R>