668-0010 Rabbit Semiconductor, 668-0010 Datasheet - Page 35
668-0010
Manufacturer Part Number
668-0010
Description
IC MPU RABIT3000 55.5MHZ 128LQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0011.pdf
(312 pages)
Specifications of 668-0010
Rohs Status
RoHS non-compliant
Processor Type
Rabbit 3000 8-Bit
Speed
55.5MHz
Voltage
2.5V, 2.7V, 3V, 3.3V
Mounting Type
Surface Mount
Package / Case
128-LQFP
Features
-
Other names
316-1016
- Current page: 35 of 312
- Download datasheet (2Mb)
3.3 Operation
Pulling the /RESET pin low will initialize everything in the Rabbit 3000 except for the
real-time clock registers. The reset of the Rabbit 3000 is delayed until the completion of
any write cycles in progress; reset takes effect immediately when no write cycles are
occurring. The reset sequence requires a minimum of 128 cycles of the main clock to com-
plete in either case.
During reset, the impedance of the /CS1 pin is high and all other memory and I/O control
signals are held high. The special behavior of /CS1 allows an external RAM to be powered
by the same source as the VBATIO pin (which powers /CS1). In this case, a pullup resistor
is required on /CS1 to keep the RAM deselected during powerdown. The RESOUT pin is
high during reset and powerdown, but low at all other times, and can be used to control an
external power switch to disconnect VDDIO from VBATIO when the main power source
is removed.
Table 3-1 lists the condition of the processor after reset takes place. The state of all regis-
ters after reset is provided in the chapter describing the specific peripheral.
Chapter 3 Reset and Bootstrap
Memory Advanced
PC, SP, IIR, EIR,
Peripheral Clock
Interrupt Priority
Control Register
Control Register
Watchdog Timer
Watchdog Timer
Memory Bank 0
CPU Registers:
Clock Doubler
(IP Register)
CPU Clock,
Function
Secondary
SU, HTR
Table 3-1. Rabbit 3000 Condition After Reset
/CS0, /OE0, write-protected,
Operation After Reset
Enabled (2 seconds)
Divide-by-8 mode
0xFF (Priority 3)
8-bit interface
4 wait states
Disabled
Disabled
0x0000
25
Related parts for 668-0010
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Microprocessors - MPU 30MHz PROCESSOR 100PQFP IQ2T VERS.
Manufacturer:
Rabbit Semiconductor
Part Number:
Description:
IC CPU RABBIT2000 30MHZ 100PQFP
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
IC MPU RABIT3000A 55.5MHZ128LQFP
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
Microprocessors - MPU Rabbit 3000 TFBGA 55.5 MHz Clock Speed
Manufacturer:
Rabbit Semiconductor
Part Number:
Description:
Microprocessors - MPU Rabbit 3000 TFBGA Microprocessor
Manufacturer:
Rabbit Semiconductor
Part Number:
Description:
IC CPU RABBIT2000 30MHZ 100PQFP
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
IC CPU RABBIT4000 128-LQFP
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
IC MPU RABIT3000A 55.5MHZ128LQFP
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
MODULE RABBITCORE RCM4010
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
RCM4110 RABBITCORE
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
MODULE RABBITCORE RCM2000
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
MODULE RABBITCORE RCM3000
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
MCU RCM4000 RABBITCORE
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
MODULE RCM4210 RABBITCORE
Manufacturer:
Rabbit Semiconductor
Datasheet: