m37753ffchp Mitsumi Electronics, Corp., m37753ffchp Datasheet - Page 17

• Manufacturer Part Number: m37753ffchp
• Description: Single Chip 16 Bit Cmos Microcomputer Flash Memory Version
• Manufacturer: Mitsumi Electronics, Corp.

Read-only mode
The microcomputer enters the read-only mode by applying V
the V
memory location to be read and the control signals at the timing
Fig. 8 Read timing
Read/Write mode
The microcomputer enters the read/write mode by applying V
the V
mand to choose the operation (e. g., read, program, or erase) to be
performed on the flash memory (this is called the first cycle), and
then input the information necessary for execution of the command
(e.g, address and data) and control signals (this is called the second
cycle). When this is done, the M37753FFCFP and the
M37753FFCHP execute the specified operation.
Table 3. Software command (Parallel input/output mode)
Note: ADI = Device identification address : manufacturer’s code 00000
Read
Program
Program verify
Erase
Erase verify
Reset
Device identification
PP
PP
DDI = Device identification data : manufacturer’s code 1C
X can be V
pin. In this mode, the user must first input a software com-
pin. In this mode, the user can input the address of a
Symbol
IL
or V
IH
.
Address
CE
OE
WE
Data
Verify address
Address input
V
V
V
V
V
V
V
V
V
V
IH
IL
IH
IL
IH
IL
IH
IL
OH
OL
Floating
SHINGLE-CHIP 16-BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION
First cycle
t
WRR
16
, device code D0
PP
PP
H to
16
L to
, device code 00001
Data input
00
40
C0
20
A0
FF
90
t
a(AD)
t
CLZ
t
16
16
16
16
16
16
16
a(CE)
Valid address
t
OLZ
t
___
shown in Figure 8, and the M37753FFCFP and the M37753FFCHP
will output the contents of the user’s specified address from data I/O
pin to the external. In this mode, the user cannot perform any opera-
tion other than read.
Table 3 shows the software commands and the input/output informa-
tion in the first and the second cycles. The input address is latched
internally at the falling edge of the WE input; software commands
and other input data are latched internally at the rising edge of the
WE input.
The following explains each software command. Refer to Figures 9
to 11 for details about the signal input/output timings.
a(OE)
16
t
RC
16
Dout
Program address
Read address
Address input
t
DH
MITSUBISHI MICROCOMPUTERS
ADI
t
DF
Floating
Second cycle
___
M37753FFCHP
M37753FFCFP
Program data (Input)
Verify data (Output)
Verify data (Output)
Read data (Output)
DDI (Output)
20
FF
Data I/O
16
16
(Input)
(Input)
17