BS2824 Holtek Semiconductor Inc., BS2824 Datasheet - Page 11

• Manufacturer Part Number: BS2824
• Description: Touch Key Mcu
• Manufacturer: Holtek Semiconductor Inc.

Note:
Touch Key A.C. Characteristics
Rev. 1.00
f
t
t
t
t
RESTD
f
f
f
t
t
t
Symbol
LIRC
RES
SST
INT
LVR
Symbol
SCD
KRT1
KRT2
KH
CAL1
CAL2
1. t
2. *For f
3. To maintain the accuracy of the internal HIRC oscillator frequency, a 0.1 F decoupling capacitor should
be connected between VDD and VSS and located as close to the device as possible.
SYS
LIRC Oscillator
External Reset Low Pulse Width
System Start-up time Period
Interrupt Pulse Width
Low Voltage Width to Reset
Reset Delay Time
SCD Clock
Key Response Time in Normal Mode
Key Response Time in Standby Mode
Maximum Key Hold Time
Auto-Calibration Period - Normal Mode
Auto-Calibration Period - Standby Mode
=1/f
ERC
SYS
, as the resistor tolerance will influence the frequency a precision resistor is recommended.
Parameter
Parameter
V
3V
5V
DD
For HXT/LXT
For ERC/IRC
(By configuration option)
V
Test Conditions
3V
3V
3V
3V
3V
3V
11
DD
Test Conditions
BS2824/BS2854/BS2868
Conditions
Conditions
Touch Key MCU
Min.
10.4
300
1.8
7.5
75
30
Min.
0.25
6.5
5
1
1
Typ.
13.0
10.0
100
400
2.5
40
1024
1024
Typ.
100
10
13
2
1
January 27, 2010
Max.
15.6
12.5
125
500
3.2
50
Max.
19.5
15
2
Ta=25 C
Ta=25 C
Unit
kHz
Unit
ms
ms
kHz
kHz
t
t
t
SYS
SYS
SYS
ms
ms
s
s
s
s
s