M30622M4 MITSUBISHI [Mitsubishi Electric Semiconductor], M30622M4 Datasheet - Page 131

• Manufacturer Part Number: M30622M4
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Clock asynchronous serial I/O (UART) mode
Table 1.19.7. Input/output pin functions in UART mode
(when separate CTS/RTS pins function is not selected)
CLKi
(P6
RxDi
(P6
CTSi/RTSi
(P6
TxDi
(P6
Table 1.19.7 lists the functions of the input/output pins during UART mode. This table shows the pin
functions when the separate CTS/RTS pins function is not selected. Note that for a period from when the
UARTi operation mode is selected to when transfer starts, the TxDi pin outputs a “H”. (If the N-channel
open-drain is selected, this pin is in floating state.)
Pin name
2
1
3
0
, P6
, P6
, P6
, P6
6
5
7
4
, P7
, P7
, P7
, P7
1
2
0
3
)
)
)
)
Serial data output
Programmable I/O port
Transfer clock input
CTS input
RTS output
Programmable I/O port
Serial data input
________ _______
Function
_______ _______
Internal/external clock select bit (bit 3 at address 03A0
Internal/external clock select bit (bit 3 at address 03A0
Port P6
(Do not set external clock for UART2)
CTS/RTS disable bit (bit 4 at address 03A4
CTS/RTS function select bit (bit 2 at address 03A4
Port P6
bit 3 at address 03EF
CTS/RTS disable bit (bit 4 at address 03A4
CTS/RTS function select bit (bit 2 at address 03A4
CTS/RTS disable bit (bit 4 at address 03A4
Port P6
bit 1 at address 03EF
(Can be used as an input port when performing transmission only)
1
2
0
, P6
, P6
, P6
5
6
4
direction register (bits 1 and 5 at address 03EE
and P7
and P7
1
3
16
16
direction register (bits 2 and 6 at address 03EE
direction register (bits 0 and 4 at address 03EE
) = “0”
)= “0”
Method of selection
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
16
16
16
, 03AC
, 03AC
, 03AC
16
16
16
16
16
, 03AC
, 03AC
16
16
, 037C
, 037C
, 037C
, 03A8
, 03A8
16
16
Mitsubishi microcomputers
16)
16
M16C / 62 Group
16
16
, 037C
, 037C
16
16
) =“0”
) = “1”
) = “0”
= “0”
, 0378
) = “1”
16
16
16
) = “0”
16
) = “1”
16
,
,
) = “0”
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