PCF7941ATJ View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
'PCF7941ATJ' PDF : 18 Pages View PDF
NXP Semiconductors
Security Transponder and RISC Controller (STARC 2XLite)
Product Specification
PCF7x41ATJ
7 PINNING
Table 1. Pin Assignment
FUNCTION
i.c. A
i.c. A
i.c. A
VSS
n.c.
n.c.
n.c.
P20
P16
P17
P15
P10
P21
n.c.
i.c. B
n.c.
MSDA
i.c. C
i.c. C
MSCL
n.c.
n.c.
P22
P11
P12
P13
TEST
TEST
TEST
VBAT
P14
i.c. B
i.c. F
i.c. F
i.c. E
i.c. E
DESCRIPTION
Internally connected (node reference A)
Internally connected (node reference A)
Internally connected (node reference A)
Common Ground digital section (Battery neg. Terminal)
Not connected
Not connected
Not connected
General purpose I/O, Wake Up sense and Digital modulator output
General purpose I/O, voltage comparator input
General purpose I/O, Digital modulator outpu
General purpose I/O and external clock input
General purpose I/O with internal pull-up, Wake Up sense
General purpose I/O, Wake Up sense and Timer 1 Capture input / Interrupt input
Not connected
Internally connected (node reference B)
Not connected
ROM Monitor Serial Data with internal pull-up
Internally connected (node reference C)
Internally connected (node reference C)
ROM Monitor Serial Clock Output
Not connected
Not connected
General purpose I/O, Wake Up sense and Timer 1 Compare output (PWM)
General purpose I/O with internal pull-up and Wake Up sense
General purpose I/O with internal pull-up and Wake Up sense
General purpose I/O with internal pull-up and Wake Up sense
Reserved
Reserved
Reserved
Battery Supply Voltage digital section (Battery pos. Terminal)
General purpose I/O
Internally connected (node reference B)
Internally connected (node reference F)
Internally connected (node reference F)
Internally connected (node reference E)
Internally connected (node reference E)
PIN NOTE
1
2
2
2
3
2
4
5
1
6
1
7
1
8
9
10
11
12
13
14
15
3
16
17
4
18
2
19
2
20
21
22
23
24
25
26
27
1
28
1
29
1
30
31
32
3
33
2
34
2
35
2
36
2
Note
1. Reserved for device test purposes. Required to be left unconnected or connected to VSS
2. Internally connected to another pin and not connected to the chip.
3. Internally connected to another pin and not connected to the chip, but connected to the chip die attach.
4. MSCL is an output and must be left unconnected in the application. MSDA features an on-chip pull-up to VBAT, and may be
left open or terminated to VBAT, as desired. For details please refer to the ‘PCF7941 Monitor and Download Interface’ (see
13 RELATED DOCUMENTS).
2013 Oct 15
7
CONFIDENTIAL
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