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M37735EHL

PROM VERSION OF M37735MHLXXXHP

MITSUBISHI ELECTRIC  

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MITSUBISHI MICROCOMPUTERS

M37735EHLXXXHP

PROM VERSION OF M37735MHLXXXHP

EPROM MODE

The M37735EHLXXXHP features an EPROM mode in addition to its

normal

modes.

When

the

_____

RESET

signal

level

is

“L”,

the

chip

automatically enters the EPROM mode. Table 2 lists the

correspondence between pins and Figure 5 shows the pin

connections in the EPROM mode.

The EPROM mode is the 1M mode for the EPROM that is equivalent

to the M5M27C101K.

When in the EPROM mode, ports P0, P1, P2, P30, P50, P51, P52,

CNVSS and BYTE are used for the EPROM (equivalent to the

M5M27C101K). When in this mode, the built-in PROM can be

programmed or read from using these pins in the same way as with

the M5M27C101K.

This chip does not have Device Identifier Mode, so that set the

corresponding program algorithm. The program area should specify

address 0100016 – 1FFFF16.

Connect the clock which is either ceramic resonator or external clock

to XIN pin and XOUT pin.

Table 2. Pin function in EPROM mode

VCC

VPP

VSS

Address input

Data I/O

__

CE

__

OE

___

PGM

M37735EHLXXXHP

V CC

CNVSS, BYTE

VSS

Ports P0, P1, P30

Port P2

P52

P51

P50

M5M27C101K

VCC

VPP

VSS

A0 – A16

D0 – D7

__

CE

__

OE

___

PGM

P85/CLK1 ↔ 61

40 ↔ P22/A2/D2

D2

P84/CTS1/RTS1 ↔ 62

P83/TXD0 ↔ 63

P82/RXD0/CLKS0 ↔ 64

39 ↔ P23/A3/D3

D3

38 ↔ P24/A4/D4

D4

37 ↔ P25/A5/D5

D5

P81/CLK0 ↔ 65

36 ↔ P26/A6/D6

D6

P80/CTS0/RTS0/CLKS1 ↔ 66

35 ↔ P27/A7/D7

D7

VCC

VCC

67

34 ↔ P30/WEL

A16

AVCC 68

33 ↔ P31/WEH

VREF → 69

32 ↔ P32/ALE

AVSS 70

VSS 71

M37735EHLXXXHP

31 ↔ P33/HLDA

30

VSS

VSS

P77/AN7/XCIN ↔ 72

29 → E/RDE

P76/AN6/XCOUT ↔ 73

P75/AN5/ADTRG/TxD2 ↔ 74

28 → XOUT

27 ← XIN

 ∗

P74/AN4/RxD2 ↔ 75

26 ← RESET

P73/AN3/CLK2 ↔ 76

P72/AN2/CTS2 ↔ 77

P71/AN1 ↔ 78

P70/AN0 ↔ 79

P67/TBIN/ SUB ↔ 80

25

CNVSS

VPP

24 ← BYTE

23 ↔ P40/HOLD

22 ↔ P41/RDY

21 ↔ P42/ 1

Fig. 5 Pin connection in EPROM mode

Outline 80P6D-A, 80P6Q-A

∗ : Connect to ceramic oscillation circuit.

: It is used in the EPROM mode.

9

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