UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 36

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

3.2.3 Special function registers (SFRs)
bit manipulation instructions. Manipulatable bit units (1, 8, and 16) differ depending on the special function register
type.
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Unlike the general-purpose registers, each special function register has a special function.
The special function registers are allocated to the 256-byte area FF00H to FFFFH.
The special function registers can be manipulated, like the general-purpose registers, with operation, transfer, and
Each manipulation bit unit can be specified as follows.
Table 3-3 lists the special function registers. The meanings of the symbols in this table are as follows:
1-bit manipulation
Describes a symbol reserved by the assembler for the 1-bit manipulation instruction operand (sfr.bit). This
manipulation can also be specified with the address and bit.
8-bit manipulation
Describes a symbol reserved by the assembler for the 8-bit manipulation instruction operand (sfr).
manipulation can also be specified with an address.
16-bit manipulation
Describes a symbol reserved by the assembler for the 16-bit manipulation instruction operand. When specifying
an address, describe an even address.
Symbol
Indicates the addresses of the implemented special function registers. It is defined as a reserved word in the
RA78K0S, and is defined as an sfr variable using the #pragma sfr directive in the CC78K0S. Therefore, these
symbols can be used as instruction operands if an assembler or integrated debugger is used.
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Figure 3-10. General-Purpose Register Configuration (2/2)
16-bit processing
RP3
RP2
RP1
RP0
CHAPTER 3 CPU ARCHITECTURE
User’s Manual U16898EJ5V0UD
0
(b) Absolute names
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8-bit processing
R7
R6
R5
R4
R3
R2
R1
R0
0
This