MPF0900AMBA2ES datasheet(25/205 Pages) NXP

25 / 205 page

NXP Semiconductors

PF09

Nine-channel power management IC with advanced system safety monitoring

When PF09 is configured to exit DFS via the PWRON pin, a LOW to HIGH transition on the PWRON pin will

force the device out of the DFS state. If the PWRON pin was high when entering the DFS state, it must go low

first and be toggled HIGH again in order to recognize a valid exit from DFS.

When PF09 is configured to exit the DFS state via the auto-retry timer, the device will remain in the DFS state

until the retry timer (TRETRY) is expired. When the retry timer reaches it maximum value, the device will

increase the eight-bit RETRY_CNT[7:0] by one and proceed to attempt a power-up event.

When auto retry is enabled, the retry timer is increased exponentially every 15 counts. The retry timer is

calculated as follows: TRETRY = TBASE_RETRY * (2 ^ RETRY_CNT[7:4])

RETRY_CNT [7:4] [MSB]

Retry timer [ms]

Retry time [sec]

Retry Time [min]

0000

100

0.1

0.001666667

0001

200

0.2

0.003333333

0010

400

0.4

0.006666667

0011

800

0.8

0.013333333

0100

1600

1.6

0.026666667

0101

3200

3.2

0.053333333

0110

6400

6.4

0.106666667

0111

12800

12.8

0.213333333

1000

25600

25.6

0.426666667

1001

51200

51.2

0.853333333

1010

102400

102.4

1.706666667

1011

204800

204.8

3.413333333

1100

409600

409.6

6.826666667

1101

819200

819.2

13.65333333

1110

1638400

1638.4

27.30666667

1111

3276800

3276.8

54.61333333

Table 17. Auto-retry timer summary

The retry mask bits OTP_RETRY_MSK[3:0] are provided to set the maximum value for the four most significant

bits (4-MSB) of the RETRY_CNT[7:0].

For example, when the retry counter is reset to 0, The device uses the 100 ms retry timer for 15 power-up retry

attempts. When the 4 MSB of the retry counter are increased, the TRETRY is re-calculated and the device uses

the new TRETRY for the next 15 power-up retry attempts. This process will repeat until the counter reaches the

OTP_RETRY_MSK[3:0], where it remains clamped to this value using the corresponding TRETRY for every

following power-up retry attempt.

The OTP_RETRY_MODE bit is provided to select whether the auto-retry timer tries to exit the DFS state for a

limited number of times, or every time it enters the DFS state.

OTP_RETRY_MODE

Auto-retry timer mode

limited retry

infinite retry

Table 18. Autoretry dynamic characteristics

PF09

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 1.3 — 16 December 2025

Document feedback

25 / 205

MPF0900AMBA2ES датащи(PDF) 25 Page - NXP Semiconductors

MPF0900AMBA2ES датащи(HTML) 25 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL