p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 27

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Serial Communication Interface (SCI)
Figure 15.1 Block Diagram of SCI............................................................................................. 316
Figure 15.2 Data Format in Asynchronous Communication
Figure 15.3 Receive Data Sampling Timing in Asynchronous Mode ........................................ 333
Figure 15.4 Relation between Output Clock and Transmit Data Phase
Figure 15.5 Sample SCI Initialization Flowchart ....................................................................... 335
Figure 15.6 Example of SCI Transmit Operation in Asynchronous Mode
Figure 15.7 Sample Serial Transmission Flowchart ................................................................... 337
Figure 15.8 Example of SCI Receive Operation in Asynchronous Mode
Figure 15.9 Sample Serial Reception Flowchart (1)................................................................... 340
Figure 15.9 Sample Serial Reception Flowchart (2)................................................................... 341
Figure 15.10 Example of Communication Using Multiprocessor Format
Figure 15.11 Sample Multiprocessor Serial Transmission Flowchart ........................................ 344
Figure 15.12 Example of SCI Receive Operation
Figure 15.13 Sample Multiprocessor Serial Reception Flowchart (1)........................................ 346
Figure 15.13 Sample Multiprocessor Serial Reception Flowchart (2)........................................ 347
Figure 15.14 Data Format in Clocked Synchronous Communication (LSB-First)..................... 348
Figure 15.15 Sample SCI Initialization Flowchart ..................................................................... 349
Figure 15.16 Example of SCI Transmit Operation in Clocked Synchronous Mode................... 351
Figure 15.17 Sample Serial Transmission Flowchart ................................................................. 352
Figure 15.18 Example of SCI Receive Operation in Clocked Synchronous Mode .................... 353
Figure 15.19 Sample Serial Reception Flowchart ...................................................................... 354
Figure 15.20 Sample Flowchart of Simultaneous Serial Transmission and Reception .............. 356
Figure 15.21 Example of Transmission using DTC in Clocked Synchronous Mode ................. 359
Figure 15.22 Sample Flowchart for Mode Transition during Transmission............................... 360
Figure 15.23 Pin States during Transmission in Asynchronous Mode (Internal Clock)............. 361
Figure 15.24 Pin States during Transmission in Clocked Synchronous Mode
Figure 15.25 Sample Flowchart for Mode Transition during Reception .................................... 362
Figure 15.26 Switching from SCK Pins to Port Pins.................................................................. 363
Figure 15.27 Prevention of Low Pulse Output at Switching from SCK Pins to Port Pins.......... 363
(Example with 8-Bit Data, Parity, Two Stop Bits) .................................................. 331
(Asynchronous Mode) ............................................................................................. 334
(Example with 8-Bit Data, Parity, One Stop Bit) .................................................... 336
(Example with 8-Bit Data, Parity, One Stop Bit) .................................................... 338
(Transmission of Data H'AA to Receiving Station A)........................................... 343
(Example with 8-Bit Data, Multiprocessor Bit, One Stop Bit) .............................. 345
(Internal Clock)...................................................................................................... 361
Rev. 1.00 Sep. 21, 2006 Page xxvii of xxxviii