M40800 Atmel Corporation, M40800 Datasheet - Page 56
M40800
Manufacturer Part Number
M40800
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(21 pages)
3.M40800.pdf
(18 pages)
4.M40800.pdf
(153 pages)
Specifications of M40800
Flash (kbytes)
0 Kbytes
Pin Count
100
Max. Operating Frequency
40 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
32
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Uart
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
8
Self Program Memory
NO
External Bus Interface
1
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
3
Input Capture Channels
3
32khz Rtc
No
Calibrated Rc Oscillator
No
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Programmer’s Model
2.6.2
2-10
System and User
r0
r1
r2
r3
r4
r5
r6
r7
SP
LR
PC
The Thumb-state register set
= banked register
CPSR
The Thumb-state register set is a subset of the ARM-state set. The programmer has
access to:
•
•
•
•
•
There are banked SPs, LRs, and SPSRs for each privileged mode. This register set is
shown in Figure 2-4.
SPSR_fiq
r0
r1
r2
r3
r4
r5
r6
r7
SP_fiq
LR_fiq
PC
Thumb-state general registers and program counter
CPSR
FIQ
8 general registers, r0–r7
the PC
the SP
the LR
the CPSR.
Thumb-state program status registers
Copyright © 1994-2001. All rights reserved.
Supervisor
SPSR_svc
r0
r1
r2
r3
r4
r5
r6
r7
SP_svc
LR_svc
PC
CPSR
Figure 2-4 Register organization in Thumb state
SPSR_abt
r0
r1
r2
r3
r4
r5
r6
r7
SP_abt
LR_abt
PC
CPSR
Abort
SPSR_irq
r0
r1
r2
r3
r4
r5
r6
r7
SP_irq
LR_irq
PC
CPSR
IRQ
ARM DDI 0029G
Undefined
SPSR_und
r0
r1
r2
r3
r4
r5
r6
r7
SP_und
LR_und
PC
CPSR
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