UPD750104 Datasheet, PDF (42/80 Pages) NEC – 4 BIT SINGLE-CHIP MICROCONTROLLER

µPD750104, 750106, 750108, 750104(A), 750106(A), 750108(A)
(3) Symbols used for the addressing area column
* 1 MB = MBE • MBS (MBS = 0, 1, 15)
* 2 MB = 0
* 3 MBE = 0 : MB = 0 (000H - 07FH), MB = 15 (F80H - FFFH)
MBE = 1 : MB = MBS (MBS = 0, 1, 15)
* 4 MB = 15, fmem = FB0H - FBFH, FF0H - FFFH
* 5 MB = 15, pmem = FC0H - FFFH
* 6 addr = 0000H - 0FFFH (µPD750104), 0000H - 17FFH (µPD750106)
0000H - 1FFFH (µPD750108)
* 7 addr, addr1 = (Current PC) - 15 to (Current PC) - 1
(Current PC) + 2 to (Current PC) + 16
* 8 caddr = 0000H - 0FFFH (µ PD750104)
0000H - 0FFFH (PC12 = 0: µPD750106, 750108)
1000H - 17FFH (PC12 = 1: µPD750106)
1000H - 1FFFH (PC12 = 1: µPD750108)
* 9 faddr = 0000H - 07FFH
* 10 taddr = 0020H - 007FH
* 11 Mk ΙΙ mode only
addr1 = 0000H - 0FFFH (µPD750104)
0000H - 17FFH (µPD750106)
0000H - 1FFFH (µPD750108)
Data memory
addressing
Program memory
addressing
Remarks 1. MB indicates the memory bank that can be accessed.
2. For *2, MB = 0 regardless of MBE and MBS settings.
3. For *4 and *5, MB = 15 regardless of MBE and MBS settings.
4. For *6 to *11, each addressable area is indicated.
(4) Description of machine cycle column
S indicates the number of machine cycles necessary for skipping any skip instruction. The value of S changes
as follows:
• When no skip is performed
: S=0
• When a 1-byte or 2-byte instruction is skipped : S = 1
• When a 3-byte instruction^Note is skipped
: S=2
Note 3-byte instruction: BR !addr, BRA !addr1, CALL !addr, and CALLA !addr1 instructions.
Caution The GETI instruction is skipped in one machine cycle.
One machine cycle is equal to one cycle (= tCY) of the CPU clock (Φ), and four types of times are available for
selection according to the PCC setting.
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