ATAM893-D_14 Datasheet, PDF (1/98 Pages) ATMEL Corporation – EEPROM Programmable Options

Features
• Extended Temperature Range for Very High Temperature up to 125°C
• 4-Kbyte EEPROM Program Memory
• EEPROM Programmable Options
• Read Protection for the EEPROM Program Memory
• 16 Bi-directional I/Os
• Up to Seven External/Internal Interrupt Sources
• Eight Hardware and Software Interrupt Priorities
• Multifunction Timer/Counter with Prescaler/Interval Timer
• Programmable System-clock with Prescaler and Five Different Clock
Sources
• Wide Supply Voltage Range (1.8 V to 6.5 V)
• Very Low Sleep Current (< 1 µA)
• 2 × 512-bit EEPROM Data Memory
• 256 × 4-bit RAM Data Memory
• Synchronous Serial Interface (2-wire, 3-wire)
• Watchdog, POR and Brown-out Function
• Voltage Monitoring Inclusive Lo_BAT Detect
• Multi-chip Link for U3280M
Description
The ATAM893-D is the Multiple Times Programmable (MTP) version for the MARC4
ROM types ATAR080, ATAR090/890 and ATAR092/892. The MTP is designed with
EEPROM cells so it can be programmed several times. To offer full compatibility with
each ROM version, the I/O configuration is stored into a separate internal EEPROM
block during programming. The configuration is downloaded to the I/Os with every
power-on reset.
Figure 0-1.
Block Diagram
V_SS V_DD
OSC1 OSC2
BP10
BP13
BP20/NTE
BP21
BP22
BP23
Brown-out protect.
RESET
Voltage monitor
External input
VMI
Port 1
RC
oscillators
Crystal
oscillators
Clock management
External
clock input
EEPROM RAM
4 K x 8 bit 256 x 4 bit
MARC4
4-bit CPU core
I/O bus
UTCM
Timer 1
interval- and
watchdog timer
Timer 2
T2I
8/12-bit timer T2O
with modulator
SD
SSI
SC
Serial interface
Timer 3
T3O
8-bit
timer/counter
with modulator
T3I
and demodulator
Data direction +
alternate function
Port 4
Data direction +
interrupt control
Port 5
Data direction +
alternate function
Port 6
EEPROM
2 x 32 x 16 bit
BP40 BP42
BP50 BP52
INT3 T2O
INT6 INT1
SC
BP41
BP43
BP51 BP53
VMI
INT3
INT6
INT1
T2I
SD
BP60
T3O
BP63
T3I
Flash Version
for ATAR080,
ATAR090/890
and
ATAR092/892
ATAM893-D
Rev. 4680C–4BMCU–01/05