CHAPTER 1 MEMORY SPACE
User’s Manual U11047EJ3V0UM00
20
1.4 CALLT Instruction Table Area
In a 64-byte address area 0040H to 007FH, the subroutine entry address of a 1-byte call instruction (CALLT) can
be stored.
1.5 Internal Data Memory Space
The 78K/0S Series products incorporate the following data memory:
(1) Internal high-speed RAM
The 78K/0S Series products incorporate internal high-speed RAM in the address space shown in Table 1-12.
The internal high-speed RAM is also used as a stack memory.
(2) LCD display RAM (
µµµµ
PD789407A and
µµµµ
PD789417A Subseries)
LCD display RAM is allocated in the area between FA00H and FA1BH.
The LCD display RAM can also be used as ordinary RAM.
(3) EEPROM
TM
(
µµµµ
PD789146, 789156, 789197AY, 789217AY Subseries)
Electrically erasable PROM (EEPROM) is allocated in the address space shown in Table 1-12.
Unlike ordinary RAM, EEPROM retains the data it contains even when the power is turned off. Also, unlike
EPROM, the contents of EEPROM can be erased electrically, without the need to expose the chip to
ultraviolet light.
Table 1-12. Internal Data Memory Space of 78K/0S Series Products (1/2)
Subseries Name
Product Name
High-Speed RAM
LCD Display RAM
EEPROM
µ
PD789014
µ
PD789011
FE80H to FEFFH
Subseries
µ
PD789012
(128 bytes)
µ
PD78P9014
FE00H to FEFFH
(256 bytes)
µ
PD789026
µ
PD789022
FE00H to FEFFH
Subseries
µ
PD789024
(256 bytes)
µ
PD789025
FD00H to FEFFH
µ
PD789026
(512 bytes)
µ
PD78F9026
µ
PD789046
µ
PD789046
FD00H to FEFFH
Subseries
µ
PD78F9046
(512 bytes)
µ
PD789104
µ
PD789101
FE00H to FEFFH
Subseries
µ
PD789102
(256 bytes)
µ
PD789104
µ
PD789114
µ
PD789111
FE00H to FEFFH
Subseries
µ
PD789112
(256 bytes)
µ
PD789114
µ
PD78F9116
Summary of Contents for 78K/0S Series
Page 2: ...User s Manual U11047EJ3V0UM00 2 MEMO ...
Page 14: ...User s Manual U11047EJ3V0UM00 14 MEMO ...
Page 28: ...User s Manual U11047EJ3V0UM00 28 MEMO ...
Page 118: ...User s Manual U11047EJ3V0UM00 118 MEMO ...
Page 120: ...User s Manual U11047EJ3V0UM00 120 MEMO ...