56F801 データシートの表示（PDF） - Motorola => Freescale

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56F801

16-bit Hybrid Controller

Motorola => Freescale 

Freescale Semiconductor, Inc.

Flash Memory Characteristics

Data1 Valid

Data1

Data2 Valid

Data2

Data Invalid State

Data Active

Data

Tri-stated

Data3 Valid

Data3

Data Active

Figure 5. Signal States

3.4 Flash Memory Characteristics

Table 18. Flash Memory Truth Table

Mode

XE1 YE2 SE3 OE4

PROG5

ERASE6 MAS17 NVSTR8

Standby

L

L

L

L

L

Read

H

H

H

H

L

Word Program

H

H

L

L

H

Page Erase

H

L

L

L

L

Mass Erase

H

L

L

L

L

1. X address enable, all rows are disabled when XE = 0

2. Y address enable, YMUX is disabled when YE = 0

3. Sense amplifier enable

4. Output enable, tri-state Flash data out bus when OE = 0

5. Defines program cycle

6. Defines erase cycle

7. Defines mass erase cycle, erase whole block

8. Defines non-volatile store cycle

L

L

L

L

L

L

L

L

H

H

L

H

H

H

H

Table 19. IFREN Truth Table

Mode

IFREN = 1

IFREN = 0

Read

Word program

Page erase

Mass erase

Read information block

Program information block

Erase information block

Erase both block

Read main memory block

Program main memory block

Erase main memory block

Erase main memory block

56F801 Technical Data

17

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