Product Specs

Table Of Contents
34 TWIS I
2
C compatible two-wire interface
slave with EasyDMA
Page
331
,CL
NT
34.9.18 CONFIG
Address offset: 0x594
Configuration register for the address match mechanism
Bit number
Id
Reset 0x00000001
31 30
0 0
29
0
28
0
27
0
26
0
25
0
24
0
23 22 21 20
0 0 0 0
19
0
18
0
17
0
16
0
15
0
14
0
13
0
12
0
11
0
10
0
9
0
8
0
7
0
6
0
5
0
4
0
3
0
2
0
1
B
0
0
A
1
Id RW Field
Value Id
Value
Description
A RW ADDRESS0
Disabled
0
Enable or disable address matching on ADDRESS[0]
Disabled
Enabled
1
Enabled
B RW ADDRESS1
Disabled
0
Enable or disable address matching on ADDRESS[1]
Disabled
Enabled
1
Enabled
34.9.19 ORC
Address offset: 0x5C0
Over-read character. Character sent out in case of an over-read of the transmit buffer.
Bit number
Id
Reset 0x00000000
31 30
0 0
29
0
28
0
27
0
26
0
25
0
24
0
23 22 21 20
0 0 0 0
19
0
18
0
17
0
16
0
15
0
14
0
13
0
12
0
11
0
10
0
9
0
8
0
7
A
0
6
A
0
5
A
0
4
A
0
3
A
0
2
A
0
1
A
0
0
A
0
Id RW Field
Value Id
Value
Description
A RW ORC Over-read character. Character sent out in case of an over-readof the
transmit buffer.
34.10 Electrical specification
34.10.1 TWIS slave interface electrical specifications
Symbol
Description
Min.
Typ.
Max.
Units
f
TWIS
Bit rates for TWIS
31
100
400
kbps
I
TWIS,100kbps
Run current for TWIS (Average current to receive and transfer a
byte to RAM), 100 kbps
45
µA
I
TWIS,400kbps
Run current for TWIS (Average current to receive and transfer a
byte to RAM), 400 kbps
45
µA
I
TWIS,IDLE
Idle current for TWIS
1
µA
t
TWIS,START,LP
Time from PREPARERX/PREPARETX task to ready to receive/
transmit, Low power mode
t
TWIS,START
+
µs
t
START_HFI
t
TWIS,START,CL
Time from PREPARERX/PREPARETX task to ready to receive/
transmit, Constant latency mode
1.5
µs
34.10.2 TWIS slave timing specifications
Symbol
Description
Min.
Typ.
Max.
Units
f
TWIS,SCL,400kbps
SCL clock frequency, 400 kbps
400
kHz
t
TWIS,SU_DAT
Data setup time before positive edge on SCL all modes
300
ns
t
TWIS,HD_DAT
Data hold time after negative edge on SCL all modes
500
ns
t
TWIS,HD_STA,100kbps
TWI slave hold time from for START condition (SDA low to SCL
low), 100 kbps
5200
ns
t
TWIS,HD_STA,400kbps
TWI slave hold time from for START condition (SDA low to SCL
low), 400 kbps
1300
ns
31
Higher bit rates or stronger pull-ups may require GPIOs to be set as High Drive, see GPIO chapter for more
details.