Datasheet

78K0/Ix2 CHAPTER 28 ELECTRICAL SPECIFICATIONS
R01UH0010EJ0500 Rev.5.00 700
Feb 28, 2012
Caution The pins mounted depend on the product. Refer to Caution 2 at the beginning of this chapter.
T
CY vs. VDD (Main System Clock Operation, RMC = 00H (Normal Power Mode))
5.0
1.0
2.0
0.4
0.2
0.1
0
10
1.0 2.0 3.0 4.0 5.0 6.0
5.5
2.7
100
0.01
32
Supply voltage V DD [V]
Cycle time T
CY
[ s]
Guaranteed
operation range
μ
1.8
Caution The following operations and register settings can be performed in the shaded area in the figure (1.8
V  V
DD < 2.7 V), as long as TA = 40 to +85ºC:
· CPU operations (instruction execution)
CPU clock: 62.5 kHz to 5 MHz
· Reading and writing the internal RAM
· Low-voltage detector (LVI) operations
· Interval timer operations using 8-bit timer 51
· Interval timer operations using 8-bit timer H1
· Standby settings (STOP and HALT modes)
· Clock generator control register settings (except in PLL clock mode)
However, the clock can only be switched if the cycle time following the switch is at 0.4
 s or
longer.
· Watchdog timer (WDT) operations (including operations related to the internal low-speed
oscillator)
· Port settings
Registers: PMxx, Pxx, PUxx, PIM6
Note 1
, POM6
Note 1
, RSTMASK, ADPC0, ADPC1
Note 2
, MUXSEL
Notes 1. 78K0/IA2, 78K0/IB2 only
2. 78K0/IB2 only