MAXQ7670A Maxim, MAXQ7670A Datasheet - Page 30

• Manufacturer Part Number: MAXQ7670A
• Description: The MAXQ7670A is a highly integrated solution for measuring multiple analog signals and outputting the results on a control area network (CAN) bus
• Manufacturer: Maxim

Microcontroller with 12-Bit ADC,
PGA, 64KB Flash, and CAN Interface
The MAXQ7670A uses an 8MHz or 16MHz Jauch
JXG53P2 (or similar specification):
Frequency: 8MHz or 16MHz ±0.25%.
C
C
Series resonance resistance: max 50Ω/300Ω for
16MHz/8MHz, respectively.
Note: Series resonance resistance is the resistance
observed when the resonator is in the series resonant
condition. This is a parameter often stated by quartz
crystal vendors and is called R1. When a resonator is
used in the parallel resonant mode with an external
load capacitance, as is the case with the MAXQ7670A
oscillator circuit, the effective resistance is sometimes
stated. This effective resistance at the loaded frequen-
cy of oscillation is:
Table 2. System Register Map
30
LOAD
O
REGISTER
: < 7pF max.
INDEX
______________________________________________________________________________________
Ch
Dh
Ah
Bh
Eh
0h
1h
2h
3h
4h
5h
6h
7h
8h
9h
Fh
: 12pF.
R1 x (1 + (C
AP (8h)
WDCN
CKCN
APC
PSF
IMR
SC
AP
IIR
—
—
IC
—
—
—
—
—
O
/C
LOAD
Crystal Selection
A (9h)
A[10]
A[11]
A[12]
A[13]
A[14]
A[15]
A[0]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
A[7]
A[8]
A[9]
))2
PFX (Bh)
PFX[0]
PFX[1]
PFX[2]
PFX[3]
PFX[4]
PFX[5]
PFX[6]
PFX[7]
MODULE NAME (BASE SPECIFIER)
—
—
—
—
—
—
—
For typical C
tance can be greater than R1 by a factor of two.
Highly versatile, affordably priced development tools
for this µC are available from Maxim and third-party
suppliers. Tools for the MAXQ7670A include:
• Compilers
• Evaluation kits
• JTAG-to-serial converters for programming and
A list of development tool vendors can be found at
www.maxim-ic.com/microcontrollers. For technical
support, go to www.maxim-ic.com/support.
debugging
IP (Ch)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
IP
Development and Technical Support
O
and C
SP (Dh)
LC0
LC1
SP
—
—
—
—
—
—
—
—
—
—
—
—
IV
LOAD
values, the effective resis-
DPC (Eh)
GRXL
OFFS
DPC
GRS
GRH
GRL
GR
BP
FP
—
—
—
—
—
—
—
DP (Fh)
DP0
DP1
—
—
—
—
—
—
—
—
—
—
—
—
—
—