Cpu And Kdc Descriptions Ou - Sharp ER-1910 Service Manual

ER- 2395
3. CPU pin description
3-1. CPU (SC1033C)
The SC1033C is a single chip microprocessor which has an internal
ROM, RAM, and serial I/O.
Pin configuration
DBO| 2| | 63] AZ
DB1| 3] 62] A12
DB2 A8
DB8 | 60] AQ
DB4| 6| 159] All
DB5| 7 A10
DB6] 8| Al4
DB7[ 9] 56] A13
CS1 55] A6
SHEN[11| 54] A5
POFF | 12 /58]A4
WR | 13 | |52)A8
RD} 14| A2
DRS Al
1 DF | 16] A0
SCK MG 8
BZ MG7
LDRQ| 19] | 46| MG 6
PC1 | 20| MG5
STH{21] | MG4
HTS [22]
43] MG8
RES (23| MG2
x2 [ea]. MG1
X1 | 40] RCOM
Al5 | 26| [39] JCOM
PEOUT | 27 | | 38| RF
PEIN | 28] JF
A15 [29 | 36] STMP
CS2 [30 [35] DR
a| 31 MG 10
GND | 82| MGQ..
Fig. 3-1.
3-2. Signal description —
[PinNo. [Signainame| VO [ _Deseripfon ——SC*d
ce CC TT
2 I/O
10 | 68 [IN | chipsets eonects wah AB)
Shift enable es,
Data bus line |
ia [WA [OUT | Wit signal romalynatused)
[a4 [AD [OUT [Readsinal
Se pees | aoe onan colina pee
[18 [az [OUT | Buzzersignl SSS
|
20 [por [In| Neuse ion, array somanTo GND)
[21 [StH [IN ebitserialinput(KOG)
22 | Hs [our | stseratoupu oo)
(3a [ REST_|_ IN _| Reset input 'as
eS enem
| a
| | 28_| Xt _| —_| SMH oscil
Ai5 Address bus, A15:
| 28 | PEIN, | IN |PEsignalinput
30 [85 [ OUT | Chip select? (normaliynot used) SOSROM
Pc Ge CT NE
2 GIN Se OND a es ee
38 [wee | OUT | Printer magnets
| 34 | MGi0 | OUT | PrintermagnettO
| 35 | DR | OUT | Draweropensignal
| 36 | STMP | OUT | Stampsional
| 387 | QUT | Journalfeedsignal |
|e or Rested
- 39}. COM | OUT | Journal common signal. -
at wet our | Pitermagnett
[aa [ waa | OUT | Printermegnet2
[43 | wigs [OUT | Printer magnet' |
Printer magnet 4 |
MG5—_| OUT | Printer magnet 5 =
Printer magnet
| "MG7__| OUT
Printer magnet 8 _ |
_OUT | Address bus, AO | 7
Address bus, At :
OUT | Address bus, A2
Address bus, A3
- OUT | Address bus, A4 ,
| 84 | AS | OUT | Address bus, AS
OUT | Address bus, A6
: Address bus, A13
OUT | Address bus, A14
Address bus, A10
OUT | Address bus, A11
| Address bus, AQ
mot OUT Address bus, A8
Address bus, A12
OUT | Address bus, A7
ae VOD (rechargeable battery voltage during power down)