mc68hc916y3 Freescale Semiconductor, Inc, mc68hc916y3 Datasheet - Page 154

• Manufacturer Part Number: mc68hc916y3
• Description: Mc68hc16y3 16 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

5-46
MOTOROLA
STOP Mode (16K, 48K, and 32K
NOTES:
STOP Mode (TPUFLASH)
DATA0 determines the port size of the boot ROM chip-select signal CSBOOT. Unlike
other chip-select signals, CSBOOT is active at the release of reset. When DATA0 is
held low, port size is 8 bits; when DATA0 is held high, either by the weak internal pull-
up driver or by an external pull-up, port size is 16 bits. Refer to 5.9.4 Chip-Select Reset
Operation for more information.
Table 5-17 summarizes pin function options for 16-bit data bus operation.
Flash EEPROM Modules)
Emulation Mode (SCIM2)
1. CSE
2. CSM
3. DATA11 must remain high during reset to ensure normal operation of MCU.
4. Driven to put TPUFLASH in STOP mode. STOP mode disabled when DATA12 is held high and STOP shadow
5. Driven to put MRM in STOP mode. STOP mode disabled when DATA14 is held high and STOP shadow bit is
6. Driven to put 16K, 48K, and 32K flash EEPROM modules in STOP mode. STOP mode disabled when DATA14
ADDR23/CS10/ECLK
bit is cleared (MC68HC916Y3 only).
cleared (MC68HC16Y3 only).
is held high and STOP shadow bit is cleared (MC68HC916Y3 only).
STOP Mode (MRM)
ADDR19/CS6/PC3
ADDR20/CS7/PC4
ADDR21/CS8/PC5
ADDR22/CS9/PC6
IRQ[7:1]/PF[7:1]
Pin(s) Affected
FASTREF/PF0
FC2/CS5/PC2
DSACK0/PE0
DSACK1/PE1
BGACK/CSE
CSBOOT
SIZ0/PE6
SIZ1/PE7
Reserved
FC0/CS3
FC1/PC1
is enabled when DATA10 and DATA1 = 0 during reset.
BG/CSM
is enabled when DATA13, DATA10 and DATA1 = 0 during reset.
BR/CS0
DS/PE4
AS/PE5
Table 5-17 16-Bit Expanded Mode Reset Configuration
Freescale Semiconductor, Inc.
For More Information On This Product,
Select Pin
DATA11
DATA10
DATA10
DATA12
DATA14
DATA14
Go to: www.freescale.com
DATA0
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
DATA9
3
Default Function
Normal Operation
(Pin Held High)
CSBOOT 16-Bit
Array Enabled
Array Enabled
Array Enabled
FASTREF
DSACK0
DSACK1
CS[10:6]
Disabled
IRQ[7:1]
BGACK
CS[7:6]
CS[8:6]
CS[9:6]
SIZ0
SIZ1
CS0
CS3
FC1
CS5
CS6
DS
AS
BG
4
5
6
Alternate Function
MC68HC16Y3/916Y3
(Pin Held Low)
CSBOOT 8-Bit
Array Disabled
Array Disabled
Array Disabled
ADDR[20:19]
ADDR[21:19]
ADDR[22:19]
ADDR[23:19]
Reserved
ADDR19
USER’S MANUAL
Enabled
PF[7:1]
CSM
CSE
FC0
FC1
FC2
PE0
PE1
PE4
PE5
PE6
PE7
PF0
BR
1
2