RT5028C Datasheet, PDF (28/40 Pages) Richtek Technology Corporation – PMIC for Industrial Application

RT5028C
Address 14
Bit Name
[7:6] START_TIME
[5:4] L_PRESS_TIME
[3:2] SHDN_PRESS
[1:0] RESET_DLY
Address 15
Bit Name
7 SHDN_CTRL
6 SHDN_TIMING
[5:4] SHDN_DLYTIME
[3:0] Reserved
PWRON(Power On Key) time Parameters
Setting / RESET delay
Description
Startup time setting
00 : 100us (pressing time - low level)
01 : 100ms
10 : 1s
11 : 2s
Long-press time setting (after Power-On,
00 : 1s (falling edge to rising edge)
01 : 1.5s
10 : 2s
11 : 2.5s
Sending short/long-press IRQ to CPU
ex :1.5s
=> low time < 1.5s (short IRQ)
=> low time > 1.5s but < 6s(shutdown time)
(long IRQ)
=> low time > 6s(shutdown time) (shutdown)
Key-press forced shutdown time setting
00 : 4s (pressing time : low level)
01 : 6s
10 : 8s
11 : 10s
RESET signal delay after the last power startup
is done
00 : 10ms
01 : 50ms
10 : 100ms
11 : 200ms
SHDN Control
Description
Power Off setting by CPU, after set, 100ms
delayed power off
0 : Normal operation
1 : Disable the PMIC output
Disable Buck/LDO only for normal power off
(SHDN_CTRL=1)
0 : disable at the same time
1 : contrary to the startup timing
(first_on-last_off)
Delayed shutdown time after send the
(PWRON)key-press-forced-shutdown IRQ
(when IRQ is disable, there is no delay)
00 : 100ms
01 : 500ms
10 : 1s
11 : 2s
R/W
R/W
R/W
R/W
R/W
Read/Write
R/W
R/W
R/W
R/W
Reset Value
Option
Option
Option
Option
Reset Value
Option
Option
Option
0000
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is a registered trademark of Richtek Technology Corporation.
DS5028C-00 March 2015