A.c. Characteristics - Holtek HT45F23A Manual

A.C. Characteristics

Symbol Parameter
System Clock
f
SYS1
(HXT, ERC, HIRC)
f 8MHz HIRC
SYS2
f 4MHz HIRC
SYS3
f 2MHz HIRC
SYS4
f 910kHz HIRC
SYS5
f System Clock (LXT)
LXT
f 4MHz ERC (Note 3)
ERC
t 32kHz RC Period
LIRC
t External Reset Low Pulse Width
RES
t Low Voltage width to Reset
LVR
t Low Voltage width to Interrupt
LVD
t LVDO Stable Time
LVDS
System Reset Delay Time
t
RSTD
(Power-on Reset)
System start-up timer period
t
SST1
(W/O fast start-up) of HXT/TBC
System start-up timer period of
t
SST2
ERC, HIRC, EC
System start-up timer period
t
SST3
(With fast start-up) of HXT/TBC
System start-up timer period
t
SST4
(With fast start-up) of HXT/TBC
t Interrupt Pulse Width
INT
t A/D Clock Period
AD
t A/D Conversion Time
ADC
t A/D on to A/D Start
ON2ST
Note: 1. t =1/f ; t =1/f
SYS SYS SUB SUB
2. t is period of LXT or LIRC and it will not stop at Idle mode.
TBC
3. For f , as the resistor tolerance will influence the frequency a precision resistor is recommended.
ERC
4. ADC conversion time (t
ADC clock (t ).
AD
Rev. 1.40
TinyPower Flash MCU with OPA & Comparators
TM
Test Conditions
V
DD
2.2V~5.5V
—
3.3V~5.5V
3.3V Ta=25˚C
3.3V Ta=-40~85˚C
2.7V~5.5V Ta=-40~85˚C
3.3V Ta=25˚C
3.3V Ta=-40~85˚C
2.7V~5.5V Ta=-40~85˚C
3.3V Ta=25˚C
3.3V Ta=-40~85˚C
2.7V~5.5V Ta=-40~85˚C
3.3V Ta=25˚C
3.3V Ta=-40~85˚C
2.7V~5.5V Ta=-40~85˚C
—
3.3V R=150kΩ, Ta=25˚C
3.3V R=150kΩ, Ta=-40~85˚C
2.7V~5.5V R=150kΩ, Ta=-40~85˚C
3V
—
—
—
LVR disable, LVD enable,
5V
V is ready
BG
—
Power up or wake-up from
—
Sleep mode
Power up or wake-up from
—
HALT (Idle or Sleep mode)
wake-up from Idle mode
—
(f =f
SL TBC)
wake-up from Idle mode
—
(f =f
SL LIRC
—
—
Note 4 —
— 2.2V~5.5V
)=n (bits ADC) + 4 (sampling time). The conversion for each bit needs one
AD
16
HT45F23A/HT45F24A
Min. Typ.
Conditions
400 —
400 —
-2% 8
-5% 8
-10% 8
-2% 4
-5% 4
-10% 4
-2% 2
-5% 2
-10% 2
-2% 0.91
-5% 0.91
-10% 0.91
— — 32.768
-2% 4
-8% 4
-15% 4
— 28.10 31.25 34.40
— 1 —
— 60 120
— 60 120
— —
— — 100
— 1024
— 1
— 1
— 1
)
— 1 —
— 0.5 —
— — 16
2 —
Ta=25˚C
Max. Unit
4000 kHz
8000 kHz
+2% MHz
+5% MHz
+10% MHz
+2% MHz
+5% MHz
+10% MHz
+2% MHz
+5% MHz
+10% MHz
+2% MHz
+5% MHz
+10% MHz
— kHz
+2% MHz
+8% MHz
+15% MHz
µs
— µs
240 µs
240 µs
100 µs
— ms
— t *
note 1
SYS
2 t
SYS
2 t
note 2
TBC
2 t
LIRC
— µs
— µs
— t
AD
— µs
March 29, 2019