33903 datasheet(68/104 Pages) FREESCALE

68 / 104 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

33903/4/5

SERIAL PERIPHERAL INTERFACE

DETAIL OF CONTROL BITS AND REGISTER MAPPING

INIT REGISTERS

Note: these registers can be written only in INIT Mode

Table 15. Initialization Regulator Registers, INIT REG (note: register can be written only in INIT Mode)

MOSI First Byte [15-8]

[b_15 b_14] 0_0101 [P/N]

MOSI Second Byte, bits 7-0

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

01 00 _ 101 P

I/O-x sync

VDDL rst[1]

VDDL rst[0]

VDD rstD[1]

VDD rstD[0]

VAUX5/3

Cyclic on[1]

Cyclic on[0]

Default state

Condition for default

POR

Bit

Description

I/O-x sync - Determine if I/O-1 is sensed during I/O-0 activation, when cyclic sense function is selected

I/O-1 sense anytime

I/O-1 sense during I/O-0 activation

b6, b5

VDDL RST[1] VDDL RST[0] - Select the VDD under-voltage threshold, to activate RESET pin and/or INT

Reset at approx 0.9 VDD.

INT at approx 0.9 VDD, Reset at approx 0.7 VDD

Reset at approx 0.7 VDD

Reset at approx 0.9 VDD.

b4, b3

VDD RSTD[1] VDD RSTD[0] - Select the RESET pin low lev duration, after VDD rises above the VDD under-voltage threshold

1.0 ms

5.0 ms

10 ms

20 ms

[VAUX 5/3] - Select Vauxilary output voltage

VAUX = 3.3 V

VAUX = 5.0 V

b1, b0

Cyclic on[1] Cyclic on[0] - Determine I/O-0 activation time, when cyclic sense function is selected

200

μs (typical value. Ref. to dynamic parameters for exact value)

400

μs (typical value. Ref. to dynamic parameters for exact value)

800

μs (typical value. Ref. to dynamic parameters for exact value)

1600

μs (typical value. Ref. to dynamic parameters for exact value)

33903 Datasheet(PDF) 68 Page - Freescale Semiconductor, Inc

33903 Datasheet(HTML) 68 Page - Freescale Semiconductor, Inc

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

Datasheet Download

Link URL