Sharp ER-87SL Manuel de service télécharger pdf (Page 17)

No.

SYMBOL

SIGNAL

NAME

IN/

OUT

FUNCTION

32 KR6 KR6 IN KEY RETURN 6

33 KR7 KR7 IN KEY RETURN 7

34 AVRF GND

35 AVDD VDD

36 /RESET /RES0 IN

37 XT2

32.768 KHz

38 XT1

39 IC GND

40 X2

4.19 MHz

41 X1

42 VSS1 GND

43 LDRQ LDRQ IN LORD REQUEST

44 ERC ERC IN EVENT READ CANCEL

45 SHEN /SHEN OUT SHIFT ENABLE

46 /RES1 /RESETS OUT SYSTEM TO RESET

47 ST6 ST6 OUT KEY STROBE 6

48 ST7 ST7 OUT KEY STROBE 7

49 ST8 ST8 OUT KEY STROBE 8

50 ST9 NU OUT KEY STROBE 9

51 /POFF /POFF IN POWER OFF

52 BUZ BUZ OUT BUZZER

53 T0 G1 OUT DISPLAY DIGIT 1

54 T1 G2 OUT DISPLAY DIGIT 2

55 T2 G3 OUT DISPLAY DIGIT 3

56 T3 G4 OUT DISPLAY DIGIT 4

57 T4 G5 OUT DISPLAY DIGIT 5

58 T5 G6 OUT DISPLAY DIGIT 6

59 T6 G7 OUT DISPLAY DIGIT 7

60 T7 G8 OUT DISPLAY DIGIT 8

61 T8 G9 OUT DISPLAY DIGIT 9

62 T9 G10 OUT DISPLAY DIGIT 10

63 T10 NU OUT DISPLAY DIGIT 11

64 ID NU OUT DISPLAY SEGMENT

2-4. TPRC1 (F258024PC)

1) General

TPRC1 is the LSI circuit of the peripheral circuits of the microcom-

puter required for thermal printer control.

Fig. 2-6

The CPU is designed for use with H8/500. The bus I/F, however, is

not restricted to the design concept.

The printer is designed mainly for use with PR-58. However, the

thermalhead composition (the dot number and the block number) is

rather flexible.

1. Auto cutter (Option)

2. Pulse motor

3. Thermalhead

4. Switch

CG ROM

PHAI

INT

WAIT

D0~7

A0~23

CPU

(H8/500)

POF,RES

TPRC1

PB RAM

(SRAM)

Auto cutter Pulse motor

Thermal

head

Switch

sensor

CLOCK

LATCH

ST1~4

HCD

PHUP,PSP,

PST,POP

CTAO,CTBO

PFP,PCRES

XRS,XJS

RVPON,JVPON

RTRM,PTJM

BA0~15

BD0~2

BRD

BWR

BRAS

(BRAS)

4 – 9

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 75 76

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Sharp ER-87SL Manuel de service Page 17

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