C8051T627-B-GM Silicon Labs, C8051T627-B-GM Datasheet - Page 142
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
- Current page: 142 of 298
- Download datasheet (2Mb)
C8051T620/1/6/7 & C8051T320/1/2/3
22.3. Priority Crossbar Decoder
The Priority Crossbar Decoder assigns a priority to each I/O function, starting at the top with UART0. When
a digital resource is selected, the least-significant unassigned Port pin is assigned to that resource (exclud-
ing UART0, which is always at pins 4 and 5). If a Port pin is assigned, the Crossbar skips that pin when
assigning the next selected resource. Additionally, the Crossbar will skip Port pins whose associated bits in
the PnSKIP registers are set. The PnSKIP registers allow software to skip Port pins that are to be used for
analog input, dedicated functions, or GPIO.
Because of the nature of the Priority Crossbar Decoder, not all peripherals can be located on all port pins.
Figure 22.3 shows the possible pins on which peripheral I/O can appear.
Important Note on Crossbar Configuration: If a Port pin is claimed by a peripheral without use of the
Crossbar, its corresponding PnSKIP bit should be set. The Crossbar skips selected pins as if they were
already assigned, and moves to the next unassigned pin.
Registers XBR0, XBR1, and XBR2 are used to assign the digital I/O resources to the physical I/O Port
pins. Note that when the SMBus is selected, the Crossbar assigns both pins associated with the SMBus
(SDA and SCL); when a UART is selected, the Crossbar assigns both pins associated with the UART (TX
and RX). UART0 pin assignments are fixed for bootloading purposes: UART TX0 is always assigned to
P0.4; UART RX0 is always assigned to P0.5. Standard Port I/Os appear contiguously after the prioritized
functions have been assigned. Figure 22.4 and Figure 22.5 show examples of how the crossbar assigns
peripherals according to the XBRn and PnSKIP register settings.
Important Note: The SPI can be operated in either 3-wire or 4-wire modes, pending the state of the
NSSMD1–NSSMD0 bits in register SPI0CN. According to the SPI mode, the NSS signal may or may not
be routed to a Port pin.
142
Digital Function
External Interrupt 0
External Interrupt 1
Port Match
Table 22.3. Port I/O Assignment for External Digital Event Capture Functions
Potentially Assignable Port Pins
Rev. 1.2
P0.0 - P0.7
P0.0 - P0.7
P0.0 - P1.7
P0MASK, P0MAT
P1MASK, P1MAT
SFR(s) used for
Assignment
IT01CF
IT01CF
Related parts for C8051T627-B-GM
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
KIT EVALUATION FOR CP2102
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
KIT EVAL FOR CP2103 USB TO UART
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
KIT EVAL FOR CP2201 ETH CTRLR
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DAUGHTER CARD CAP TOUCH SENSE
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
KIT STARTER CAP TOUCH SENSE
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT FOR C8051F320/F321
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEVKIT-F120/21/22/23/24/25/26/27
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT FOR C8051F310/F311
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT F220/221/226/230/231/236
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT F300/301/302/303/304/305
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT FOR C8051F330/F331
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT FOR F005/006/007
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT FOR F020/F021/F022/F023
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
KIT DEV FOR C8051F34X
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
KIT DEV FOR C8051F41X
Manufacturer:
Silicon Laboratories Inc
Datasheet: