E202075_HD404889 Datasheet, PDF (25/202 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip LCD Circuit

HD404889/HD404899/HD404878/HD404868 Series
$0000
$000F
$003F
$0FFF
Vector addresses
(16 words)
Zero page subroutine area
(64 words)
HD404874/HD404864
pattern/program area
(4,096 words)
HD404888/HD404898/HD404878/
HD404868/HCD404878
pattern/program area
(8,192 words)
$1FFF
$0000
$0001
JMPL instruction
(Jump to reset routine)
$0002
$0003
JMPL instruction
(Jump to WU0 to WU3 routine)
$0004
$0005
JMPL instruction
(Jump to INT0 routine)
$0006
$0007
JMPL instruction
(Jump to INT1 routine)
$0008
$0009
JMPL instruction
(Jump to timer A routine)
$000A
$000B
JMPL instruction
(Jump to timer B/timer D routine)
$000C
$000D
JMPL instruction
(Jump to timer C routine)
$000E
JMPL instruction
$000F ^{(Jump to A/D or serial interface routine)}
HD4048812/HD4048912
pattern/program area
(12,288 words)
$2FFF
HD404889/HD4074889/
HD404899/HD4074899/HD4074869/
HCD404889/HCD404899
pattern/program area
(16,384 words)
$3FFF
Figure 1 ROM Memory Map
RAM Memory Map
The MCU has on-chip RAM comprising a memory register area, LCD data area, data area, and stack area.
In addition to these areas, an interrupt control bit area, special register area, and register flag area are
mapped onto RAM memory space as a RAM-mapped register area.The RAM memory map is shown in
figure 2 and described below.
Memory register, LCD data area, data area, and stack area values are unstable immediately after
power is turned on. They must be initialized before use.
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