668-0010 Rabbit Semiconductor, 668-0010 Datasheet - Page 201
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: 201 of 312
- Download datasheet (2Mb)
23. E
I/O C
XTERNAL
ONTROL
23.1 Overview
The Rabbit 3000’s external I/O space consists of 64 KB that is accessed by prefixing a
read or write instruction with the IOE instruction. These accesses can go onto the memory
bus or onto the external I/O bus (described below). There are three dedicated signal pins
(/IORD, /IOWR, /BUFEN) that toggle for all external I/O accesses, and eight I/O strobes
that can be associated with this external I/O space and directed out of Parallel Port E.
23.1.1 External I/O Bus
The Rabbit 3000 can enable a separate external I/O bus for external devices to keep bus
loading on the memory bus at an acceptable level. This bus consists of eight data lines on
Parallel Port A and up to six address lines on Parallel Port B. This functionality is mutu-
ally exclusive with the slave port and regular parallel I/O on Parallel Ports A and B.
When enabled, the address lines of the external I/O bus hold their value until a new value
is written to them. The data lines return to a tristate mode after each transaction.
See Section 23.1.2 for memory timing for external I/O accesses.
Chapter 23 External I/O Control
191
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: