E202075_HD404889 Datasheet, PDF(29/202 Page) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip LCD Circuit

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E202075_HD404889 Datasheet, PDF (29/202 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip LCD Circuit

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HD404889/HD404899/HD404878/HD404868 Series

HD404868 Series

$000

RAM-mapped

$03F

$040 Memory register (MR) area

$04F

(16 digits)

$050

LCD data area

(24 digits)

$067

$068

$08F

$090

Not used

Data

(304 digits)

$1BF

$1C0

Not used

$3BF

$3C0

$3FF

Stack area

(64 digits)

$000

$001

$002

Interrupt control bit area

$003

$004 Speed Select Reg.

(SSR) W

$005 Miscellaneous Reg.

(MIS) W

$006 Edge Select Reg.

(ESR) W

$007

Not used

$008 Port Mode Reg.0

(PMR0) W

$009 Port Mode Reg.1

(PMR1) W

$00A Port Mode Reg.2

(PMR2) W

$00B Port Mode Reg.3

(PMR3) W

$00C Port Mode Reg.4

(PMR4) W

$00D Module Standby Reg.1

(MSR1) W

$00E Module Standby Reg.2

(MSR2) W

$00F Timer Mode Reg.A

(TMA) W

$010 Timer Mode Reg.B1

(TMB1) W

$011 Timer Mode Reg.B2

(TMB2) W

$012 Timer B

(TRBL/TWBL) R/W

$013

(TRBU/TWBU) R/W

$014 Timer Mode Reg.C1

(TMC1) W

$015 Timer Mode Reg.C2

(TMC2) W

$016 Timer C

(TRCL/TWCL) R/W

$017

(TRCU/TWCU) R/W

$018

$019

$01A

$01B

$01C

Not used

$01D

$01E

$01F

$020

$021

$022

$023

$024 Serial Mode Reg.1

(SMR1) W

$025 Serial Mode Reg.2

(SMR2) W

$026 Serial Mode Reg.Lower

(SRL) R/W

$027 Serial Mode Reg.Upper

(SRU) R/W

$028 A/D Mode reg.

(AMR) W

$029 A/D Data Reg.Lower

(ADRL) R

$02A A/D Data Reg.Middle

(ADRM) R

$02B A/D Data Reg.Upper

(ADRU) R

$02C LCD Control Reg.

(LCR) W

$02D LCD Mode Reg.

(LMR) W

$02E Buzzer Mode Reg.

(BMR) W

$02F

Not used

$030

$031

$032

$033

Port D0âD3 DCR

Port D4âD7 DCR

Port D8âD9 DCR

Not used

(DCD0) W

(DCD1) W

(DCD2) W

$034 Port R0 DCR

(DCR0) W

$035 Port R1 DCR

(DCR1) W

$036 Port R2 DCR

(DCR2) W

$037 Port R3 DCR

(DCR3) W

$038 Port R4 DCR

(DCR4) W

$039 Port R5 DCR

(DCR5) W

$03A Port R6 DCR

(DCR6) W

$03B Port R7 DCR

(DCR7) W

$03C

$03D

$03E

Not used

$03F

Notes:

R : Read

W : Write

R/W: Read/Write

*Two registers are mapped

onto the same address

($012, $013, $016, $017).

$012 Timer Read Reg.B Lower

$013 Timer Read Reg.B Upper

(TRBL) R Timer Write Reg.B Lower

(TRBU) R Timer Write Reg.B Upper

(TWBL) W

(TWBU) W

$016 Timer Read Reg.C Lower

$017 Timer Read Reg.C Upper

(TRCL) R Timer Write Reg.C Lower

(TRCU) R Timer Write Reg.C Upper

(TWCL) W

(TWCU) W

Figure 2 RAM Memory Map (cont)

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