HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 719

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

(1) Data write
(2) Transfer from
(3) Serial data output
Note: When the ERS flag is set, it should be cleared until transfer of the last bit (D7 in LSB-first
I/O data
TXI
(TEND interrupt)
TDR to TSR
In case of normal transmission: TEND flag is set
In case of transmit error:
Legend:
Ds:
D0 to D7: Data bits
Dp:
DE:
Note: etu: Elementary time unit (time for transfer of 1 bit)
When GM = 0
When GM = 1
transmission, D0 in MSB-first transmission) of the next transfer data to be transmitted has
been completed.
Figure 15.5 Relation Between Transmit Operation and Internal Registers
Start bit
Parity bit
Error signal
Figure 15.6 TEND Flag Generation Timing in Transmission
Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp
Data 1
Data 1
Data 1
TDR
ERS flag is set
Steps (2) and (3) above are repeated until the TEND flag is set
(shift register)
11.0 etu
Data 1
TSR
12.5 etu
Rev.6.00 Sep. 27, 2007 Page 689 of 1268
; Data remains in TDR
Data 1
Section 15 Smart Card Interface
I/O signal line output
Guard
time
DE
REJ09B0220-0600