SM8521
SM8521 CONTENTS
DESCRIPTION .............................................................. 2
FEATURES .................................................................... 2
PIN CONNECTIONS ..................................................... 3
BLOCK DIAGRAM ....................................................... 4
PIN DESCRIPTION ....................................................... 5
ABSOLUTE MAXIMUM RATINGS ............................. 6
RECOMMENDED OPERATING CONDITIONS ............. 6
DC CHARACTERISTICS ............................................. 7
SM85CPU ...................................................................... 8
Register Lineup
Address Space
ROM Area
Register File Area
RAM Area
Data Format
Bus Timing
INSTRUCTION SET .................................................... 51
Definition of Symbols
Instruction Summary
Addressing Mode
SYSTEM CONFIGURATION EXAMPLE .................. 55
SYSTEM CONTROL .................................................. 18
Oscillator Circuit
Clock System
Memory Map
Hardware Reset
Interrupt Function
Standby Function
I/O PORTS ................................................................... 29
TIMER/COUNTERS .................................................... 30
Clock Timer
Watchdog Timer Register (WDT)
LCDC/DMA .................................................................. 33
VRAM Configuration
DMA Transfer
Compound and Overwrite Mode
Registers
SOUND GENERATOR ............................................... 41
Sound Waveform Register
Registers
MMU ............................................................................. 45
UNIVERSAL ASYNCHRONOUS RECEIVER AND
TRANSMITTER (UART) INTERFACE ......................... 47
UART Transmit Data Register (URTT)
UART Receive Data Register (URTR)
UART Status Register (URTS)
UART Control Register (URTC)
Transfer Format
-1-