TMP92CF30
2009-06-12
92CF30-6
2.2
Pin names and Functions
The names of the input/output pins and their functions are described below.
Table 2.2.1 Pin names and functions (1/6)
Pin name
Number
of Pins
I/O Functions
D0 to D7
8
I/O
Data: Data bus D0 to D7
P10 to P17
D8 to D15
8
I/O
I/O
Port 1: I/O port input or output specifiable in units of bits
Data: Data bus D8 to D15
P40 to P47
A0 to A7
8
Output
Output
Port 4: Output port
Address: Address bus A0 to A7
P50 to P57
A8 to A15
8
Output
Output
Port 5: Output port
Address: Address bus A8 to A15
P60 to P67
A16 to A23
8
I/O
Output
Port 6: I/O port input or output specifiable in units of bits
Address: Address bus A16 to A23
P70
RD
1 Output
Output
Port 70: Output port
Read: Outputs strobe signal to read external memory
P71
WRLL
NDRE
1 I/O
Output
Output
Port 71: Output port
Write: Outputs strobe signal for writing data on pins D0 to D7
NAND Flash read: Outputs strobe signal to read external NAND-Flash
P72
WRLU
NDWE
1 I/O
Output
Output
Port 72: I/O port
Write: Outputs strobe signal for writing data on pins D8 to D15
NAND Flash write: Write enable for NAND Flash
P73
EA24
1 I/O
Output
Port 73: I/O port
Expanded address 24
P74
EA25
1 I/O
Output
Port 74: I/O port
Expanded address 25
P75
R/
W
NDR/ B
1 I/O
Output
Input
Port 75: I/O port
Read/Write: “High” represents read or dummy cycle; “Low” represents write cycle
NAND Flash Ready(1) / Busy(0) input
P76
WAIT
1
I/O
Input
Port 76: I/O port
Wait: Signal used to request CPU bus wait
P80
0
CS
1
Output
Output
Port 80: Output port
Chip select 0: Outputs “Low” when address is within specified address area
P81
1
CS
SDCS
1 Output
Output
Output
Port 81: Output port
Chip select 1: Outputs “Low” when address is within specified address area
Chip select for SDRAM: Outputs “Low” when the address is within SDRAM address area
P82
2
CS
CSZA
SDCS
1 Output
Output
Output
Output
Port 82: Output port
Chip select 2: Outputs “Low” when address is within specified address area
Expanded address ZA: Outputs “Low” when address is within specified address area
Chip select for SDRAM: Outputs “Low” when the address is within SDRAM address area
P83
3
CS
CSXA
1 Output
Output
Output
Port 83: Output port
Chip select 3: Outputs “Low” when address is within specified address area
Expanded address XA: Outputs “Low” when address is within specified address area
Содержание TLCS-900/H1 Series
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