MC81F4332 Datasheet, PDF (36/198 Pages) Finechips – ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

MC81F4x16
7.9 LVR (Low Voltage Reset) Electrical Characteristics
(T_A = - 40 ^C to + 85^C, V_DD = 2.2 V to 5.5 V)
Parameter
Symbol Conditions
Min
Typ
2.2
2.4
LVR voltage
VLVR
–
2.5
2.7
2.7
3.0
3.6
4.0
Hysteresis voltage of LVR
△V
–
–
10
Current consumption
ILVR VDD = 3V
–
45
Max
2.6
2.9
3.3
4.4
100
80
Units
V
mV
uA
Note :
1. The current of LVR circuit is consumed when LVR is enabled by “ROM Option”.
2. 216/fx ( = 6.55 ms at fx = 10 MHz)
7.10 UART Timing Characteristics
(T_A = - 40 ^C to + 85^C, V_DD = 2.2 V to 5.5 V)
Parameter
Symbol
Serial port clock cycle time
t_SCK
Output data setup to clock rising edge
t_S1
Clock rising edge to input data valid
t_S2
Output data hold after clock rising
edge
t_H1
Input data hold after clock rising edge
t_H2
Serial port clock High, Low level width ^t_HIGH, ^t_LOW
Min
1250
590
–
Typ
t_CPU  16
t_CPU  13
–
t_CPU – 50
t_CPU
0
–
470
t_CPU  8
Max
1650
–
590
–
–
970
Units
nS
tHIGH
tLOW
tSCK
0.8 VDD
0.2 VDD
Figure 7-6 Waveform for UART Timing Characteristics
36
October 19, 2009 Ver.1.35