PT8A3263-66A-F Datasheet, PDF (5/15 Pages) Pericom Semiconductor Corporation – NTC Heating Controller with Multi LEDs

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PT8A3263-66A-F/67A/68A
NTC Heating Controller with Multi LEDs
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Functional Description
 Input Button
For PT8A3263/64/65/66
1) Up button: Temperature up adjustment. Push it once the
temperature setting will increase one level until the
highest level is reached.
2) Down button: Temperature down adjustment. Push
Down button once, the temperature setting will reduce
one level until the lowest level is reached.
3) On/Off button: This button is toggled on Heating-on
state and Heating-off state.
For 1-key mode, this key will be set the temperature by loop:
Off12345(6)Off
When power on IC first, the initial temperature setting is
Level 4 (Internal option: Level1)
Delay function:
Heating-on & Heating-off has no delay
(Internal option: Heating-on has 0.5 second delay & Heating-
off has 1 second delay).
4) C1: When in ON state, C1 output high.
For PT8A3267A/68A
1) Up button: Temperature up adjustment. Push Up button
once, the temperature setting will increase one level until
the highest level is reached.
2) Down button: Temperature down adjustment. Push
Down button once, the temperature setting will reduce
one level until the lowest level is reached.
3) On/Off button: This button is toggled on Heating-on
state and Heating-off state.
PA8A3267A: When power on IC first, the initial temperature
setting is Level 4
PA8A3268A: When power on IC first, the initial temperature
setting is Level 6
If power is always on IC, the last setting temperature level will
be memorized when push ON again
Delay function:
PT8A3267A: Heating-on has no delay & Heating-off has 1
second delay
PT8A3268A: Heating-on has no delay & Heating-off has 2
second delay
4) C1: Lock key function
 When in Heating-on state, after continuously push
on/off key down twice( The interval is less than 600ms ),
IC will lock current temperature level state and disable
up/down and on/off function, C1 pin output high level
 When in lock state push on/off key down twice again,
IC will unlock current temperature level state and enable
up/down and on/off function, C1 pin output low level
 LEDs indicator:
LED1: Level 1 temperature setting ( eg. 100℃)
LED2: Level 2 temperature setting ( eg. 120℃)
LED3: Level 3 temperature setting ( eg. 140℃)
LED4: Level 4 temperature setting ( eg. 160℃)
LED5: Level 5 temperature setting ( eg. 180℃)
LED6: Level 6 temperature setting ( eg. 200℃, for
PT8A3265/6x, PT8A3267A/68A)
1) Mode 1
Standby/Off state: LED1 ~ LED6 are all off
On State: The LED that be setting level is on.
2) Mode 2
Standby/Off state: LED1 ~ LED6 are all off
On state:
Heating up: The LED that be setting level is Flash. (Fclk/32)
Stable: This LED is on
Drop: This LED is on
3) Mode 3
Standby/Off state: LED1 ~ LED6 are all off
On state: The LED that be setting level and below the
setting level are on.
4) Mode 4
Standby/Off state: LED1 ~ LED6 are all off
On state:
Level 1:
Heating up/ Drop: LED1 is flash (Fclk/32)
Stable: LED1 is on
Level2:
Heating up/ Drop: LED1 and LED2 is round flash (Fclk/16)
Stable: LED1 and LED2 are on
Level4 ~ Leve6: similar as upon
Note:
1. When in stable state, don’t flash even if detect the below or
over setting temperature(for mode2 and mode4)
2. When push up/down key, the setting LED will be on state
for 1.5s before starting flashing(for mode2 and mode4)
3. When push up/down key, the setting LED will be forced to
flash for 2.5s (for mode4)
5) NTC open state
The LED that relate with the setting temperature is fast
flash (Fclk/8)
Disable up/down key function
If detect NTC is not open, recover working state
6) LED drive style
LED1-LED6: High pulse drive (50Hz)
C1: High level drive, PT8A3267/68A use pulse drive (50Hz)
 Reset
After power on, the chip will be reset by internal POR
circuit, GATE, LED and C1 pins output low level and IC is
in Standby state
 Timer
 Once IC enters Heating-on state, internal timer will
start to count. It’ll be timeout and auto heating-off after
exact 1 hour both under 60Hz and 50Hz. This function
can be disabled by Pin TM is tied to ground.
 The timer will be clear while push up/down key.
 Control signal output
When working in Heating-on state, Gate output will be
related to NTC1 input and CLK input amplitude.
2015-07-0002
PT0326-2 09/29/15
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