CP2400 SILABS [Silicon Laboratories], CP2400 Datasheet - Page 60
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CP2400
Manufacturer Part Number
CP2400
Description
128/64 SEGMENT LCD DRIVER
Manufacturer
SILABS [Silicon Laboratories]
Datasheet
1.CP2400.pdf
(110 pages)
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CP2400/1/2/3
10. Port Input/Output
CP2400/1/2/3 devices have 36 (48-pin packages) or 20 (32-pin packages) multi-function I/O pins. Port pins are
organized as byte-wide ports and may be used for general purpose I/O, generating a Port Match interrupt, or for an
analog function (e.g., LCD).
Note: The port match functionality described in this chapter only applies when the device is awake (Normal and Idle Power
All Port I/Os are 5 V tolerant when used as digital inputs or open-drain outputs. For Port I/Os configured as digital
push-pull outputs, current is sourced from the V
operating modes and the electrical specifications chapter for detailed electrical specifications. Figure shows a
block diagram of the Port I/O for the 48-pin packaged devices. The 32-pin packaged devices are functionally the
same, however, they have less I/O. Refer to the System Overview for a detailed block diagram of 32-pin devices.
60
Modes). Refer to the Power Modes chapter for information on port match wake-up from ULP or shutdown mode.
P0
P1
P2
P3
P4
(P0.0-P0.7)
(P1.0-P1.7)
(P0.0-P0.7)
(P3.0-P3.7)
(P4.0-P4.3)
36
8
8
8
8
4
Figure 10.1. Port I/O Diagram
Rev. 1.0
DD
supply. See Section 10.1 for more information on Port I/O
Configuration
Mapping
Registers
Logic
Port
Port Match
8
8
8
8
4
Cells
Cells
Cells
Cells
Cells
I/O
I/O
I/O
I/O
I/O
P0
P1
P2
P3
P4
PnMDO, PnMDI
Registers
P0.0
P0.7
P1.0
P1.7
P2.0
P2.7
P3.0
P3.7
P4.0
P4.3