UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 42

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

42
Data memory
space
Remark The flash memory is divided into blocks (one block = 1 KB). For the address values and block numbers,
Notes 1.
RAM space in
which instruction
can be fetched
Program
memory space
2.
3.
4.
see Table 3-2 Correspondence Between Address Values and Block Numbers in Flash Memory.
During on-chip debugging, use of this area is disabled since it is used as the user data backup area for
communication.
During on-chip debugging, use of this area is disabled since it is used as the communication command
area (269 bytes).
When boot swap is not used: Set the option bytes to 0080H to 0084H.
When boot swap is used:
Writing boot cluster 0 can be prohibited depending on the setting of security (see 24.8
Setting).
FFFFH
FEDFH
FB00H
FAFFH
FA00H
F7FFH
C000H
BFFFH
0 1 8 F H
FF00H
FEFFH
FEE0H
F800H
F000H
EFFFH
0 1 9 0 H
0 0 8 3 H
0 0 8 2 H
0 0 0 0 H
F9FFH
Internal high-speed RAM
Special function registers
Internal expansion RAM
General-purpose
32
Flash memory
registers
49152
2048
1024
(256
AFCAN area
256
Reserved
Reserved
Note 1
Note 2
(SFR)
8 bits
E B F F H
B F F F H
E C 0 0 H
0 7 F F H
0 3 F F H
0 4 0 0 H
0 0 0 0 H
8 bits
8 bits)
8 bits
8 bits
Figure 3-1. Memory Map (
8 bits
CHAPTER 3 CPU ARCHITECTURE
Set the option bytes to 0080H to 0084H and 1080H to 1084H.
User’s Manual U17554EJ4V0UD
FE20H
FE1FH
FE10H
FE0FH
FF1FH
FF20H
Block 2FH
Block 01H
Block 00H
Short direct
addressing
μ
PD78F0887)
B F F F H
0 F F F H
1 0 8 5 H
1 0 8 4 H
1 0 8 0 H
1 0 7 F H
1 0 0 0 H
0 8 0 0 H
0 7 F F H
0 0 3 F H
0 0 8 5 H
0 0 8 4 H
0 0 8 0 H
0 0 7 F H
0 0 4 0 H
0 0 0 0 H
1 KB
Option byte area
Option byte area
CALLF entry area
CALLT table area
Vector table area
Program area
Program area
Program area
2048
1915
64
64
5
5
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
Note 3
Note 3
1 F F F H
Boot cluster 0
Boot cluster 1
Security
Note 4