HT82M99E Datasheet, PDF (3/45 Pages) Holtek Semiconductor Inc – USB Mouse Encoder 8-Bit OTP MCU

HT82M99E
Absolute Maximum Ratings
Supply Voltage ...........................V_SS-0.3V to V_SS+6.0V
Input Voltage..............................V_SS-0.3V to V_DD+0.3V
Storage Temperature ............................-50°C to 125°C
Operating Temperature...............................0°C to 70°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.
D.C. Characteristics
Ta=25°C
Symbol
Parameter
Test Conditions
V_DD
Conditions
Min. Typ. Max. Unit
V_DD
Operating Voltage
¾
¾
4
¾ 5.5 V
I_DD
Operating Current (6MHz Crystal)
5V No load, f_SYS=6MHz
¾
7
9 mA
I_STB
Standby Current
5V No load, system HALT ¾ 300 500 mA
V_IL1
Input Low Voltage for I/O Ports
5V
¾
0
¾ 0.8 V
V_IH1
Input High Voltage for I/O Ports
5V
¾
2
¾
5
V
V_IL2
Input Low Voltage (RES)
5V
¾
0
¾ 0.4VDD V
V_IH2
Input High Voltage (RES)
5V
¾
0.9V_DD ¾ V_DD V
I_OL
Output Sink Current for Other Ports
PA0~PA7, PB2~PB4, PB7
5V
V_OL=0.4V
2
4
¾ mA
I_OH
Output Port Source Current
5V V_OL=3.4V
-2.5 -4 ¾ mA
R_PD
Pull-down Resistance for PA0~PA3, PB2
and PB3
5V
¾
10 30 50 kW
R_PH1 Pull-high Resistance for CLK and DATA ¾
¾
2 4.7 6 kW
R_PH2
Pull-high Resistance for PA0~PA7,
PB2~PB4, PB7
¾
¾
30 50 70 kW
V_LVR
Low Voltage Reset
5V
¾
2.4 2.7 3
V
A.C. Characteristics
Ta=25°C
Symbol
Parameter
Test Conditions
V_DD
Conditions
Min. Typ. Max. Unit
f_SYS
System Clock (Crystal OSC)
5V
¾
6
¾ 12 MHz
f_RCSYS RC Clock with 8-bit Prescaler Register
5V
¾
0
32 ¾ kHz
t_WDT
Watchdog Time-out Period (System Clock) ¾ Without WDT prescaler 1024 ¾
¾ tRCSYS
t_RF
USBD+, USBD- Rising & falling Time
¾
¾
75 ¾ 300 ns
t_SST
System Start-up Timer Period
¾ Wake-up from HALT
¾ 1024 ¾ tSYS
t_OSC
Crystal Setup
¾
¾
¾
5
10 ms
Note: Power-on period=t_WDT+t_SST+t_OSC
WDT Time-out in normal mode=1/f_RCSYS´256´WDTS+t_WDT
WDT Time-out in HALT mode=1/f_RCSYS´256´WDTS+t_SST+t_OSC
Rev. 1.50
3
November 19, 2004