C8051T627-B-GM Silicon Labs, C8051T627-B-GM Datasheet - Page 149
C8051T627-B-GM
Manufacturer Part Number
C8051T627-B-GM
Description
8-bit Microcontrollers - MCU UBS, 64K OTP MCU
Manufacturer
Silicon Labs
Datasheet
1.C8051T626-B-GM.pdf
(298 pages)
Specifications of C8051T627-B-GM
Rohs
yes
Core
8051
Processor Series
C8051T627
Data Bus Width
8 bit
Maximum Clock Frequency
48 MHz
Program Memory Size
64 KB
Data Ram Size
3328 B
On-chip Adc
Yes
Operating Supply Voltage
1.8 V to 5.25 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
QFN-32
Mounting Style
SMD/SMT
Program Memory Type
EPROM
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SFR Definition 22.3. XBR2: Port I/O Crossbar Register 2
SFR Address = 0xE3
22.5. Port Match
Port match functionality allows system events to be triggered by a logic value change on P0 or P1. A soft-
ware controlled value stored in the PnMATCH registers specifies the expected or normal logic values of P0
and P1. A Port mismatch event occurs if the logic levels of the Port’s input pins no longer match the soft-
ware controlled value. This allows Software to be notified if a certain change or pattern occurs on P0 or P1
input pins regardless of the XBRn settings.
The PnMASK registers can be used to individually select which P0 and P1 pins should be compared
against the PnMATCH registers. A Port mismatch event is generated if (P0 & P0MASK) does not equal
(P0MATCH & P0MASK) or if (P1 & P1MASK) does not equal (P1MATCH & P1MASK).
A Port mismatch event may be used to generate an interrupt or wake the device from a low power mode,
such as IDLE or SUSPEND. See the Interrupts and Power Options chapters for more details on interrupt
and wake-up sources.
Name
Reset
Bit
7:2
Type
1
0
Bit
Reserved
Unused
URT1E
Name
R
7
0
Read = 0000000b; Write = Don’t Care.
Must write 0.
UART1 I/O Output Enable Bit.
0: UART1 I/O unavailable at Port pins.
1: UART1 TX1, RX1 routed to Port pins.
R
6
0
C8051T620/1/6/7 & C8051T320/1/2/3
R
5
0
Rev. 1.2
R
4
0
Function
R
3
0
R
2
0
Reserved
R/W
1
0
URT1E
R/W
0
0
149
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