m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 86

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Operation
Note
2.4.6 Operation of Serial I/O (reception used for SIM interface)
In receiving data in UARTi (i=0 to 3) mode (used for SIM interface), choose functions from those listed in
Table 2.4.7. Operations of the circled items are described below. Figure 2.4.16 shows the operation
timing, and Figures 2.4.17 to 2.4.18 show the set-up procedures.
Table 2.4.7. Choosed functions
(1) Setting the transmit enable bit and receive enable bit to “1” readies data-receivable status.
(2) When the first bit (the start bit) of reception data is received from the RxDi (i=0 to 3) pin, data
(3) When the stop bit(s) is (are) received, the content of the UARTi (i=0 to 3) receive register is
(4) The receive complete flag goes to “0” when the lower-order byte of the UARTi (i=0 to 3) buffer
(5) When the parity error is occurred, T
• Set the RxDi and CLKi pins' port direction register to “0”.
• Select N-channel open drain output for TxDi (i=0 to 3) pin with data output select bit of UARTi
Transfer data
format
(i=0 to 3) transmit/receive control register 0.
is received, bit by bit, in sequence: LSB, ····, MSB, and stop bit(s).
transmitted to the UARTi (i=0 to 3) receive buffer register.
At this time, the receive complete flag goes to “1” to indicate that the reception is completed,
and the UARTi (i=0 to 3) receive interrupt request bit goes to “1”.
register is read.
Item
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O
Direct format
Inverse format
Set-up
X
Di (i=0 to 3) pin goes to “L” level.
Transfer clock
source
Item
O
External clock (CLKi pin)
Internal clock (f
Set-up
2. SIM interface
1
/f
8
/f
32
)