mc68hc912bd32 Freescale Semiconductor, Inc, mc68hc912bd32 Datasheet - Page 112

• Manufacturer Part Number: mc68hc912bd32
• Description: 16-bit Device Composed Of Standard On-chip Peripherals
• Manufacturer: Freescale Semiconductor, Inc

Clocks
MC68HC912BD32 Rev 1.0
PORT T7
PCLK
PCLK
PAEN
2
2
2
2
2
2
2
2
2
2
2
2
2
2
TEN
REGISTER: SP0BR
BITS: SPR2, SPR1, SPR0
0:0:1
0:1:0
0:1:1
1:0:0
1:0:1
1:1:0
1:1:1
0:0:0
Figure 14 Clock Chain for SPI, ATD and BDM
0:0:0
0:0:1
0:1:0
0:1:1
1:0:0
1:0:1
COUNTER (PR0-PR4)
REGISTER: TMSK2
BITS: PR2, PR1, PR0
5-BIT MODULUS
Freescale Semiconductor, Inc.
LOGIC
GATE
For More Information On This Product,
Figure 13 Clock Chain for TIM
PAMOD
Go to: www.freescale.com
BIT RATE
SPI
SYNCHRONIZER
PACLK
ECLK
LOGIC
BKGD
PIN
Clocks
2
BKGD DIRECTION
PULSE ACC
LOW BYTE
BKGD OUT
BKGD IN
PULSE ACC
HIGH BYTE
TO ATD
BDM BIT CLOCK:
Receive: Detect falling edge,
count 12 E clocks, Sample input
Transmit 1: Detect falling edge,
count 6 E clocks while output is
high impedance, Drive out 1 E
cycle pulse high, high imped-
ance output again
Transmit 0: Detect falling edge,
Drive out low, count 9 E clocks,
Drive out 1 E cycle pulse high,
high impedance output
PACLK/256
PACLK/65536
(PAOV)
REGISTER: PACTL
BITS: PAEN, CLK1, CLK0
1:0:1
1:1:1
0:x:x
1:0:0
1:1:0
COUNTER
TO TIM
12-clock