3819 Group USER’S MANUAL
Table of contents
iv
List of figures
CHAPTER 1. HARDWARE
Fig. 1 Structure of CPU mode register .................................................................................................8
Fig. 2 Memory map..................................................................................................................................9
Fig. 3 Memory map of special function register (SFR) ....................................................................10
Fig. 4 Port block diagram (1) ...............................................................................................................13
Fig. 5 Port block diagram (2) ...............................................................................................................14
Fig. 6 Port block diagram (3) ...............................................................................................................15
Fig. 7 Port block diagram (4) ...............................................................................................................16
Fig. 8 Interrupt control...........................................................................................................................18
Fig. 9 Structure of interrupt related registers.....................................................................................18
Fig. 10 Timer block diagram.................................................................................................................20
Fig. 11 Structure of timer related registers ........................................................................................21
Fig. 12 Timing in timer 6 PWM mode.................................................................................................22
Fig. 13 Serial I/O block diagram..........................................................................................................24
Fig. 14 Structure of serial I/O control registers .................................................................................25
Fig. 15 Serial I/O timing in the serial I/O ordinary mode (for LSB first) .......................................26
Fig. 16 Structure of serial I/O automatic transfer control register ..................................................26
Fig. 17 Bit allocation of serial I/O automatic transfer RAM .............................................................27
Fig. 18 Serial I/O automatic transfer interval timing .........................................................................27
Fig. 19 Serial I/O1 register transfer operation in full duplex mode ................................................28
Fig. 20 Timing chart during serial I/O automatic transfer
(internal clock selected, S
RDY
used) .....................................................................................29
Fig. 21 Timing chart during serial I/O automatic transfer
(internal clock selected, S
CLK11
and S
CLK12
used) ..............................................................29
Fig. 22 Timing during serial I/O automatic transfer (external clock selected) ..............................30
Fig. 23 Structure of A-D control register ............................................................................................31
Fig. 24 A-D converter block diagram ..................................................................................................32
Fig. 25 D-A converter block diagram ..................................................................................................32
Fig. 26 Equivalent connection circuit of D-A converter ....................................................................32
Fig. 27 FLD control circuit block diagram ..........................................................................................33
Fig. 28 Structure of FLDC mode register 1 .......................................................................................34
Fig. 29 Structure of FLDC mode register 2 .......................................................................................34
Fig. 30 Segment/digit setting example ................................................................................................35
Fig. 31 FLD automatic display RAM and bit allocation ....................................................................37
Fig. 32 Example of using the FLD automatic display RAM (1).......................................................38
Fig. 33 Example of using the FLD automatic display RAM (2) (continued)..................................39
Fig. 34 FLDC timing...............................................................................................................................40
Fig. 35 Block diagram of interrupt interval determination circuit.....................................................41
Fig. 36 Structure of interrupt interval determination control register ..............................................42
Fig. 37 Interrupt interval determination operation example (at rising edge active)......................42
Fig. 38 Interrupt interval determination operation example (at both-sided edge active) .............43
Fig. 39 External circuit example for zero cross detection................................................................44
Fig. 40 Structure of zero cross detection control register................................................................44
Fig. 41 Block diagram of zero cross detection circuit ......................................................................44
Fig. 42 Noise filter circuit diagram ......................................................................................................45