PEF82913 datasheet(39/240 Pages) INFINEON

39 / 240 page

PEF 82912/82913

Functional Description

Data Sheet

2001-03-30

2.2

Reset Generation

Figure 9 shows the organization of the reset generation of the Q-SMINT®I.

•.

Figure 9

Reset Generation of the Q-SMINT®I1)

Reset Source Selection

The internal reset sources C/I code change and Watchdog timer can be output at the low

active reset pin RSTO. These reset sources can be selected with the RSS2,1 bits in the

MODE1 register according to Table 8.

1) The ’OR’-gates shall illustrate in a symbolic way, that ’source A active’ or ’source B active’ is forwarded. The

real polarity of the different sources is not considered.

Watchdog

C/I0 Code Change

(Exchange Awake)

Software Reset

Reset

Functional

Block

RES_CI

RES_S

RES_HDLC

RES_U

Internal Reset

of all Registers

≥1

POR/UVD

VDDDET

RST Pin

RSS2,1

RSS1

RESETGEN.VSD

RSTO

´0,1´= open

´0´

´1´

´1,x´

´0,0´

125µs

≤ t ≤ 250µs

t = 125µs

Deacti-

vation

Delay

VDDDET

´0´

´1´

Reset MODE1

´0´

´1´

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