UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 577

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(3) Macro service channel pointer
The macro service channel pointer specifies the macro service channel address. The macro service channel can be
located in the 256-byte space from FE00H to FEFFH when the LOCATION 0 instruction is executed, or FFE00H to
FFEFFH when the LOCATION 0FH instruction is executed, and the high-order 16 bits of the address are fixed.
Therefore, the low-order 8 bits of the data stored to the highest address of the macro service channel are set in the
macro service channel pointer.
VCIE
7
MOD2
6
MOD1
5
MOD2 MOD1 MOD0
MOD0
VCIE
Figure 20-21 Macro Service Mode Register Format (2/2)
0
0
0
0
1
1
1
1
0
1
4
CHT3
Generated
Not generated (next interrupt processing is vectored interrupt)
3
0
0
1
1
0
0
1
1
CHAPTER 20 INTERRUPT FUNCTIONS
CHT0
CHT1
CHT2
CHT3
CHT2
0
1
0
1
0
1
0
1
2
CHT1
Data size for timer
specified
by MPT: 1 byte
Data size for timer
specified
by MPT: 2 bytes
Retains MPT
1
0
0
1
1
Decrements MPD
Interrupt request when MSC = 0
CHT0
0
Decrements MPT
No automatic
addition
Automatic
addition
No automatic
addition
Automatic
addition
1
0
1
1
Type C
Retains MPT
No ring control
Ring control
No ring control
Ring control
No ring control
Ring control
No ring control
Ring control
0
1
1
1
Increments MPD
Increments MPT
1
1
1
1
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