
ix
20.3.4 Operating States .................................................................................................... 448
20.3.5 Transmission and Reception Operations............................................................... 451
20.3.6 High- or Low-Level Output Selection during Idle................................................ 468
20.3.7 Transfer Clock Error Detection (External Clock Mode)....................................... 469
20.4
Interrupts ............................................................................................................................ 471
20.5
Usage Notes........................................................................................................................ 471
Section 21 Alarm Output (HD404318/HD404358/HD404358R
/HD404339 /HD404369 Series).................................................................. 473
21.1
Overview ............................................................................................................................ 473
21.1.1 Features ................................................................................................................. 473
21.1.2 Block Diagram ...................................................................................................... 474
21.1.3 Pin Functions......................................................................................................... 475
21.1.4 Register Configuration .......................................................................................... 475
21.2
Register Descriptions.......................................................................................................... 476
21.2.1 Port Mode Register A (PMRA: $004) .................................................................. 476
21.2.2 Port Mode Register C (PMRC: $025) ................................................................... 477
21.3
Operation ............................................................................................................................ 478
Section 22 ROM.................................................................................................................... 479
22.1
Overview ............................................................................................................................ 479
22.2
PROM Mode ...................................................................................................................... 483
22.2.1 PROM Mode ......................................................................................................... 483
22.2.2 Socket Adapter Pin Correspondence and Memory Map ....................................... 484
22.3
Programming ...................................................................................................................... 493
22.3.1 Write/Verify .......................................................................................................... 493
22.3.2 PROM Programming Notes .................................................................................. 498
22.3.3 Post-Programming Reliability............................................................................... 499
22.4
Notes on Ordering ROM .................................................................................................... 500
Section 23 RAM.................................................................................................................... 503
23.1
Overview ............................................................................................................................ 503
23.1.1 Features ................................................................................................................. 503
23.1.2 RAM Memory Map .............................................................................................. 505
23.2
RAM Enable Flag (RAME: $021, 3) ................................................................................. 506
23.3
Usage Notes........................................................................................................................ 506
Section 24 Application Examples.................................................................................... 507
24.1
Using the A/D Converter.................................................................................................... 507
24.2
Using Timer B .................................................................................................................... 517
Section 25 Electrical Characteristics............................................................................... 525
25.1
HD404344R Series ............................................................................................................. 525