參數(shù)資料
型號： M44C092
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
封裝： SSO-20
文件頁數(shù)： 69/84頁
文件大?。?/td> 643K
代理商： M44C092
M44C892
M44C892
M44C092
Rev. A5, 14-Dec-01
71 (84)
4
M44C892
The M44C892 is a multi-chip product which offers a
combination of a MARC4-based microcontroller and a
serial E2PROM data memory in a single package. As
microcontroller the M44C092
is used and as serial
E2PROM the U505M. Two internal lines can be used as
chip-to-chip link in a single package. The maximum
internal data communication frequency between the
M44C092 and the U505M over the chip link (MCL_SC
and MCL_SD) is fSC_MCL = 500 kHZ.
The microcontroller and the EEPROM portions of this
multi-chip device are equivalent to their respective
individual component chips, except for the electrical
specification.
Internal 2-wire multi-chip link
Two additional on-chip pads (MCL_SC and MCL_SD)
for the SC and the SD line can be used as chip-to-chip link
for multi-chip applications. These pads can be activated
by setting the MCL-bit in the SISC-register.
SCL
SDA
MCL_SC
MCL_SD
U505M
M44C092
VDD
BP40/SC
BP10
BP43/SD
BP13
Multi chip link
13835
VSS
Figure 86. Link between M44C092 and U505M
4.1
U505M EEPROM
The U505M is a 512-bit EEPROM internally organized
32 x 16 bit. The programming voltage as well as the write-
cycle timing is generated on-chip. The U505M features
a serial interface allowing operation on a simple two-wire
bus with an I2C-compatible protocol. Its low power con-
sumption makes it well suited for battery applications.
16–bit read/write buffer
Address
control
8–bit data register
EEPROM
32 x 16
HV–generator
Timing control
Mode
control
I/O
control
SCL
V
DD
V
SS
SDA
13883
Figure 87. Block diagram EEPROM
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