UPD78F9502MA-CAC-A NEC, UPD78F9502MA-CAC-A Datasheet - Page 27

• Manufacturer Part Number: UPD78F9502MA-CAC-A
• Description: 8BIT MCU, 4K FLASH, 128B RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F9502MA-CAC-A

• Controller Family/series: UPD78F
• No. Of I/o's: 8
• Ram Memory Size: 128Byte
• Cpu Speed: 10MHz
• No. Of Timers: 2
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

3.1.2 Internal data memory space
3.1.3 Special function register (SFR) area
Table 3-3).
3.1.4 Data memory addressing
manipulation as efficient as possible. The area (FE80H to FEFFH) which contains a data memory and the special
function register (SFR) area can be accessed using a unique addressing mode in accordance with each function.
Figures 3-4 to 3-6 illustrate the data memory addressing.
128-byte internal high-speed RAM is provided in the PD78F9500, 78F9501, 78F9502.
The internal high-speed RAM can also be used as a stack memory.
Special function registers (SFRs) of on-chip peripheral hardware are allocated to the area of FF00H to FFFFH (see
The PD78F9500, 78F9501, 78F9502 are provided with a wide range of addressing modes to make memory
F F F F H
F F 2 0 H
F E 1 F H
F F 0 0 H
F E F F H
F E 8 0 H
F E 7 F H
0 4 0 0 H
0 3 F F H
0 0 0 0 H
Special function registers (SFR)
Internal high-speed RAM
Flash memory
Use prohibted
1,024
128
256
Figure 3-4. Data Memory Addressing ( PD78F9500)
8 bits
8 bits
8 bits
Preliminary User’s Manual U18681EJ1V0UD
CHAPTER 3 CPU ARCHITECTURE
SFR addressing
Short direct addressing
Direct addressing
Register indirect addressing
Based addressing
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