HT45R22E Holtek Semiconductor, HT45R22E Datasheet - Page 7

• Manufacturer Part Number: HT45R22E
• Description: Remote Type 8-bit OTP MCU
• Manufacturer: Holtek Semiconductor

Note:
EEPROM - A.C. Characteristics
Notes: These parameters are periodically sampled but not 100% tested
Rev. 1.00
t
t
t
RESTD
Symbol
f
t
t
t
t
t
t
t
t
t
t
t
t
t
SST
INT
LVR
Symbol
SK
HIGH
LOW
r
f
HD:STA
SU:STA
HD:DAT
SU:DAT
SU:STO
AA
BUF
SP
WR
1. t
2. * For f
3. To maintain the accuracy of the internal HIRC oscillator frequency, a 0.1 F decoupling capacitor should
* The standard mode means V
For relative timing, refer to timing diagrams
be connected between V
System Start-up time Period
Interrupt Pulse Width
Low Voltage Width to Reset
Reset Delay Time
SYS
Clock Frequency
Clock High Time
Clock Low Time
SDA and SCL Rise Time
SDA and SCL Fall Time
START Condition Hold Time
START Condition Setup Time
Data Input Hold Time
Data Input Setup Time
STOP Condition Setup Time
Output Valid from Clock
Bus Free Time
Input Filter Time Constant
(SDA and SCL Pins)
Write Cycle Time
=1/f
ERC
SYS
, as the resistor tolerance will influence the frequency a precision resistor is recommended.
Parameter
Parameter
DD
and V
CC
=2.2V to 3.6V
SS
Note
Note
After this period the first
clock pulse is generated
Only relevant for repeated
START condition
Time in which the bus
must be free before a new
transmission can start
Noise suppression time
and located as close to the device as possible.
V
DD
Remark
For HXT/LXT
For ERC/IRC
(By configuration option)
Test Conditions
7
Conditions
Standard Mode*
4000
4700
4000
4000
4000
4700
Min.
200
0
Min.
0.25
Max.
1000
3500
100
300
100
1
5
1024
Typ.
V
1200
1200
100
Min.
600
600
600
100
600
CC
2
1
0
=3V 10%
HT45R22E
Max.
March 17, 2010
Max.
400
300
300
900
50
2
5
www.DataSheet4U.com
Ta=25 C
Unit
Unit
t
t
kHz
SYS
SYS
ms
ms
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s