CY327 Pinouts

CY327 DIP Pinout
CY327/J PLCC Pinout
CY327/Q QFP Pinout*

[CY327 DIP Pinout Diagram] Zoom In    [CY327 PLCC Pinout Diagram] Zoom In    [CY327 QFP Pinout Diagram] Zoom In


CY327
Dip
Pin#
CY327/J
PLCC
Pin#
CY327/Q
QFP*
Pin#
Pin Name I/O Description
- 1 39 NC   no internal connection
1 2 40 Key 1 I/O Soft Key or Matrix
2 3 41 Key 2 I/O Soft Key or Matrix
3 4 42 Key 3 I/O Soft Key or Matrix
4 5 43 Key 4 I/O Soft Key or Matrix
5 6 44 Key 5 I/O Soft Key or Matrix
6 7 1 Key 6 I/O Soft Key or Matrix
7 8 2 Key 7 I/O ASCII or 4x4 Matrix
8 9 3 Key Sent/ O SoftKey status, ASCII, or 4x4 Matrix
9 10 4 Reset I Resets CY327 when high
10 11 5 RxD I Received Serial Data line
- 12 6 NC   no internal connection
11 13 7 TxD O Transmitted Serial Data Line
12 14 8 Write 327/ I Write parallel data strobe to CY327
13 15 9 Scan Keys/ I Enable Key scan on Pins 1-6
14 16 10 Nx64 I Select LCD height. Hi=64, Lo=128
15 17 11 CTS/ O Clear-to-send serial data when low
16 18 12 Enable LCD O Enable strobe to LCD
17 19 13 R-W LCD O Read-Write Signal to LCD
18 20 14 Xtal2 I Crystal oscillator connection
19 21 15 Xtal1 I Crystal oscillator connection
20 22 16 Vss I Ground connection for CY327
- 23 17 NC   no internal connection
21 24 18 Baud Rate I Lo=2400, Hi=9600, Z=adaptive
22 25 19 Font Size I Lo=8x8, Hi=6x8 character font
23 26 20 Bus Write/ O CY327 wants to write data to bus
24 27 21 Ready O CY327 ready to accept data
25 28 22 Bus Ctrl/ O Enables data onto CY327/LCD data bus
26 29 23 LCD select/ O chip-selects HD61830 for data transfer
27 30 24 LCD reg O HD61830 register: Hi=Reg, Lo=Data
28 31 25 LCD reset O Drives HD61830 reset line
29 32 26 Reserved O do not connect
30 33 27 Clock Out O clock output, 1/6 crystal rate
- 34 28 NC   no internal connection
31 35 27 Vdd I +5v
32 36 30 D 7 I/O Data Bus bit 7 (MSB)
33 37 31 D 6 I/O Data Bus bit 6
34 38 32 D 5 I/O Data Bus bit 5
35 39 33 D 4 I/O Data Bus bit 4
36 40 34 D 3 I/O Data Bus bit 3
37 41 35 D 2 I/O Data Bus bit 2
38 42 36 D 1 I/O Data Bus bit 1
39 43 37 D 0 I/O Data Bus bit 0 (LSB)
40 44 38 Vcc (+ 5V) I +5 volt power supply

* QFP Notes:
- While the numbering scheme of the QFP pinout differs from the PLCC, the physical location of functional pins will be identical on both packages.
- The QFP package is currently only available in 1000 quantity minimums.