7220 datasheet(7/303 Pages) RENESAS

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7220 Group User’s Manual

Table of contents

CHAPTER 1. OVERVIEW

1.1 Performance overview .......................................................................................................... 1-2

1.2 Pin configuration ................................................................................................................... 1-5

1.3 Pin description ...................................................................................................................... 1-7

1.4 Functional block diagram ................................................................................................... 1-9

CHAPTER 2. FUNCTIONAL DESCRIPTION

2.1 Central processing unit ....................................................................................................... 2-2

2.1.1 Accumulator (A) ............................................................................................................. 2-2

2.1.2 Index register X (X), index register Y (Y) .................................................................. 2-2

2.1.3 Stack pointer (S) ............................................................................................................ 2-3

2.1.4 Program counter (PC) ................................................................................................... 2-6

2.1.5 Processor status register (PS) ..................................................................................... 2-6

2.2 Access area ............................................................................................................................ 2-8

2.2.1 Zero page (addresses 000016 to 00FF16) .................................................................. 2-10

2.2.2 Special page (addresses FF0016 to FFFF16) ............................................................ 2-10

2.3 Memory assignment ........................................................................................................... 2-11

2.3.1 Internal RAM ................................................................................................................ 2-16

2.3.2 I/O ports (addresses 00C016 to 00CD16) ................................................................... 2-16

2.3.3 DA registers (addresses 00CE16 and 00CF16) .......................................................... 2-17

2.3.4 PWM registers (addresses 00D016 to 00D416 and 00F616) ..................................... 2-17

2.3.5 PWM output control registers (addresses 00D516 and 00D616) ............................. 2-17

2.3.6 Multi-master I2C-BUS related registers (addresses 00D716 to 00DB16) ................. 2-17

2.3.7 Serial I/O related registers (addresses 00DC16 and 00DD16) ................................. 2-17

2.3.8 CRT display related registers (addresses 00E016 to 00EC16) ................................ 2-17

2.3.9 A-D control register (addresses 00EE16 and 00EF16) .............................................. 2-18

2.3.10 Timer registers (addresses 00F016 to 00F316) ........................................................ 2-18

2.3.11 Timer mode registers (address 00F416, 00F516) .................................................... 2-19

2.3.12 CPU mode register (address 00FB16) ..................................................................... 2-19

2.3.13 Interrupt request registers (addresses 00FC16 and 00FD16) ................................. 2-19

2.3.14 Interrupt control registers (addresses 00FE16 and 00FF16) .................................. 2-19

2.3.15 2 page register (addresses 021716 to 021B16) (only M37221M8/MA-XXXSP) .. 2-19

2.3.16 CRT display RAM (addresses 060016 to 06B716) .................................................. 2-19

2.3.17 ROM (addresses A00016 to FFFF16) ........................................................................ 2-19

2.3.18 CRT display ROM (addresses 1000016 to 11FFF16) .............................................. 2-19

2.4 Input/Output pins ................................................................................................................ 2-20

2.4.1 Programmable ports .................................................................................................... 2-20

2.4.2 Dedicated pins ............................................................................................................. 2-23

2.5 Interrupts .............................................................................................................................. 2-26

2.5.1 Interrupt sources .......................................................................................................... 2-27

2.5.2 Interrupt control ............................................................................................................ 2-29

2.6 Timers .................................................................................................................................... 2-34

2.6.1 Timer functions ............................................................................................................ 2-35

2.6.2 Timers 3 and timer 4 when reset and when executing STP instruction .............. 2-39

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