MMPF0200F0AEP datasheet(21/114 Pages) NXP

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NXP Semiconductors

PF0200

FUNCTIONAL BLOCK REQUIREMENTS AND BEHAVIORS

6.1.2.4

Soft start ramp rate

The start-up ramp rate or soft start ramp rate can be chosen from the same options as shown in Dynamic voltage scaling.

6.1.3

OTP prototyping

It is possible to test the desired configuration by using the “Try Before Buy” feature, before permanently programming fuses. The

configuration is loaded from the OTP registers with this feature. These registers merely serve as temporary storage for the values to be

written to the fuses, for the values read from the fuses, or for the values read from the default configuration. To avoid confusion, these

registers will be referred to as the TBBOTP registers. The portion of the register map that concerns OTP is shown in Table 121 and

Table 122.

The contents of the TBBOTP registers are initialized to zero when a valid VIN is first applied. The values that are then loaded into the

TBBOTP registers depend on the setting of the VDDOTP pin and on the value of the TBB_POR and FUSE_POR_XOR bits. Refer to

Table 14.

• If VDDOTP = VCOREDIG (1.5 V), the values are loaded from the default configuration.

•If VDDOTP = 0.0 V, TBB_POR = 0 and FUSE_POR_XOR = 1, the values are loaded from the fuses. It is required to set all the

FUSE_PORx bits to load the fuses.

•If VDDOTP = 0.0 V, TBB_POR = 0 and FUSE_POR_XOR = 0, the TBBOTP registers remain initialized at zero.

The initial value of TBB_POR is always “0”; only when VDDOTP = 0.0 V and TBB_POR is set to “1” are the values from the TBBOTP

registers maintained and not loaded from a different source.

The contents of the TBBOTP registers are modified by I2C. To communicate with I2C, VIN must be valid and VDDIO, to which SDA and

SCL are pulled up, must be powered by a 1.7 to 3.6 V supply. VIN, or the coin cell voltage must be valid to maintain the contents of the

registers. To power on with the contents of the TBBOTP registers, the following conditions must exist; VIN is valid, VDDOTP = 0.0 V,

TBB_POR = 1 and there is a valid turn-on event.

6.1.4

Reading OTP fuses

As described in the previous section, the contents of the fuses are loaded to the TBBOTP registers. When the following conditions are

met; VIN is valid, VDDOTP = 0.0 V, TBB_POR = 0, and FUSE_POR_XOR = 1. If ECC is enabled at the time the fuses were programmed,

the error corrected values can be loaded into the TBBOTP registers if desired. Once the fuses are loaded and a turn-on event occurs, the

PMIC will power on with the configuration programmed in the fuses. Contact your NXP representative for more details on reading the OTP

fuses.

6.1.5

Programming OTP fuses

The parameters that can be programmed are shown in the TBBOTP registers in the Extended page 1 of the register map. The PF0200

offers ECC, the control registers for which functions are located in Extended page 2 of the register map. There are ten banks of twenty-

six fuses, each that can be programmed.

100

0x0C

101

0x0D

110

0x0E

111

0x0F

Table 13. I2C address configuration (continued)

I2C_SLV_ADDR[3]

hard coded

I2C_SLV_ADDR[2:0]

I2C device address

(Hex)

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