MCIMX27ADSE Freescale Semiconductor, MCIMX27ADSE Datasheet - Page 47

• Manufacturer Part Number: MCIMX27ADSE
• Description: KIT APPLICATION DEV ADS I.MX27
• Manufacturer: Freescale Semiconductor
• Series: i.MXr
• Type: Microcontrollerr

Specifications of MCIMX27ADSE

• Contents: Main Board, LCD Panel, Keypad, NAND Flash Card, Image Sensor and TV Encoder Card
• Silicon Manufacturer: Freescale
• Core Architecture: ARM
• Core Sub-architecture: ARM9
• Silicon Core Number: I.MX2
• Silicon Family Name: I.MX27
• Supported Devices: I.MX27
• Rohs Compliant: Yes
• For Use With/related Products: i.MX27
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.10
Connector P22 is the ADS External Keypad connector. Figure 3-13 shows pin assignments and Table 3-13
provides signal descriptions for the connector.
Freescale Semiconductor
Pin(s)
* The signal name in italics is the function intended for operation with this connector. It is multiplexed in the
i.MX27 processor with the listed signal.
2, 19
External Keypad Connector
10
11
12
13
14
15
16
17
18
20
1
3
4
5
6
7
8
9
UART2_RXD (KEY_ROW6)
UART2_RTS (KEY_ROW7)
UART2_CTS (KEY_COL7)
UART2_TXD (KEY_COL6)
Table 3-13. External Keypad Connector P22 Signal Descriptions
Figure 3-13. External Keypad Connector P22 Pin Assignments
KP_ROW5
KP_ROW4
KP_ROW3
KP_ROW2
KP_ROW1
KP_ROW0
KP_COL5
KP_COL4
KP_COL3
KP_COL2
KP_COL1
KP_COL0
Signal
3V15
GND
NC
UART2_CTS
UART2_TXD
KP_COL5
KP_COL4
KP_COL3
KP_COL2
KP_COL1
KP_COL0
MCIMX27ADSE User’s Manual, Rev. A
3V15
NC
3.15 volt power
NO CONNECTION
KEYPAD COLUMN 7 — Bidirectional signal used to scan a keypad
KEYPAD ROW 7— Bidirectional signal used to scan a keypad
KEYPAD COLUMN 6 — Bidirectional signal used to scan a keypad
KEYPAD ROW 6— Bidirectional signal used to scan a keypad
KEYPAD COLUMN 5 — Bidirectional signal used to scan a keypad
KEYPAD ROW 5 — Bidirectional signal used to scan a keypad
KEYPAD COLUMN 4 — Bidirectional signal used to scan a keypad
KEYPAD ROW 4 — Bidirectional signal used to scan a keypad
KEYPAD COLUMN 3 — Bidirectional signal used to scan a keypad
KEYPAD ROW 3 — Bidirectional signal used to scan a keypad
KEYPAD COLUMN 2 — Bidirectional signal used to scan a keypad
KEYPAD ROW 2 — Bidirectional signal used to scan a keypad
KEYPAD COLUMN 1 — Bidirectional signal used to scan a keypad
KEYPAD ROW 1 — Bidirectional signal used to scan a keypad
KEYPAD COLUMN 0 — Bidirectional signal used to scan a keypad
KEYPAD ROW 0 — Bidirectional signal used to scan a keypad
GROUND
11
13
15
17
19
1
3
5
7
9
P22
• •
• •
• •
• •
• •
• •
• •
• •
• •
• •
10
12
14
16
18
20
2
4
6
8
NC
UART2_RTS
UART2_RXD
KP_ROW5
KP_ROW4
KP_ROW3
KP_ROW2
KP_ROW1
KP_ROW0
GND
Description
Support Information
3-13